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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549


FORM 10-K


(Mark One)


ý

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15((d)15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the Fiscal Year Ended December 31, 20032004

or

oTRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                             to                             

Commission File Number 1-13045


IRON MOUNTAIN INCORPORATED
(Exact name of registrant as specified in its charter)

Pennsylvania 23-2588479
(State or other jurisdiction of incorporation) (I.R.S. Employer Identification No.)

745 Atlantic Avenue, Boston, Massachusetts

 

02111
(Address of principal executive offices) (Zip Code)

617-535-4766
(Registrant's telephone number, including area code)


Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class
 Name of Exchange on Which Registered
Common Stock, $.01 par value per share New York Stock Exchange

Securities registered pursuant to Section 12(g) of the Act:None

        Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes ý    No o

        Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.    o

        Indicate by check mark whether the registrant is an accelerated filer (as defined in Exchange Act Rule 12b-2).    Yes ý    No o

        As of June 30, 2003,2004, the aggregate market value of the Common Stock of the registrant held by non-affiliates of the registrant was $2,658,636,421$2,120,312,025 based on the closing price on the New York Stock Exchange on such date.

        Number of shares of the registrant's Common Stock at March 1, 2004:    85,775,5032, 2005: 129,889,755




IRON MOUNTAIN INCORPORATED
20032004 FORM 10-K ANNUAL REPORT


Table of Contents

 
  
 Page
PART I    
Item 1. Business 1
Item 2. Properties 12
Item 3. Legal Proceedings 1312
Item 4. Submission of Matters to a Vote of Security Holders 1615

PART II

 

 

 

 
Item 5. Market for the Registrant's Common Stock, and Related Shareholder Matters and Issuer Purchases of Equity Securities 1716
Item 6. Selected Financial Data 17
Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations 21
Item 7A. Quantitative and Qualitative Disclosures About Market Risk 5447
Item 8. Financial Statements and Supplementary Data 5548
Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure 5548
Item 9A. Controls and Procedures 5648
Item 9B.Other Information49

PART III

 

 

 

 
Item 10. Directors and Executive Officers of the Registrant 5749
Item 11. Executive Compensation 5749
Item 12. Security Ownership of Certain Beneficial Owners and Management 5749
Item 13. Certain Relationships and Related Transactions 5749
Item 14. Principal AccountingAccountant Fees and Services 5749
Item 15. Exhibits and Financial Statement Schedules and Reports on Form 8-K 5850

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        References in this Annual Report on Form 10-K to "the Company", "we", "us" or "our" include Iron Mountain Incorporated and its consolidated subsidiaries, unless the context indicates otherwise.

DOCUMENTS INCORPORATED BY REFERENCE

        Certain information required in Items 10, 11, 12, 13 and 14 of Part III of this Annual Report on Form 10-K is incorporated by reference from our definitive Proxy Statement for the Annual Meeting of Shareholders to be held on or about May 27, 2004.26, 2005.

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

        We have made statements in this Annual Report on Form 10-K that constitute "forward-looking statements" as that term is defined in the Private Securities Litigation Reform Act of 1995 and in other federal securities laws. These forward-looking statements concern our operations, economic performance, financial condition, goals, beliefs, strategies, objectives, plans and current expectations. The forward-looking statements are subject to various known and unknown risks, uncertainties and other factors. When we use words such as "believes," "expects," "anticipates," "estimates" or similar expressions, we are making forward-looking statements.

        Although we believe that our forward-looking statements are based on reasonable assumptions, our expected results may not be achieved, and actual results may differ materially from our expectations. Important factors that could cause actual results to differ from expectations include, among others:

        You should not rely upon forward-looking statements except as statements of our present intentions and of our present expectations, which may or may not occur. You should read these cautionary statements as being applicable to all forward-looking statements wherever they appear. We undertake no obligation to release publicly the result of any revision to these forward-looking statements that may be made to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events. Readers are also urged to carefully review and consider the various disclosures we have made in this document, as well as our other periodic reports filed with the Securities and Exchange Commission (the "Commission" or "SEC").

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PART I

Item 1. Business.

A. Development of Business.

        We are the leader in recordsinformation storage and information managementprotection services. We are an international, full-service provider of recordsinformation storage and information managementprotection and related services, enabling customers to outsource these functions. We have a diversified customer base comprised of numerous commercial, legal, banking, healthcare, accounting, insurance, entertainment, and government organizations, including more than half95% of the Fortune 5001000 and more than two thirdstwo-thirds of the FTSE 100. Our comprehensive solutions help customers save money and manage risks associated with legal and regulatory compliance, protection of vital assets, and business continuity challenges.

        Our core business records management services include: records management program development and implementation based on best-practices to help customers comply with specific regulatory requirements; implementation of policy-based programs that feature secure, cost-effective storage for all major media, including paper, which is the dominant form of records storage, flexible retrieval access and retention management; digital archiving services for secure, legally compliant and cost-effective long-term archiving of electronic records; secure shredding services that ensure privacy and a secure chain of record custody; and specialized services for vital records, film and sound and regulated industries such as healthcare, energy and financial services.

        Our off-site data protection services include: disaster preparedness planning support; secure, off-site vaulting of data backup media for fast and efficient data recovery in the event of a disaster, human error or virus; electronic vaulting to provide managed, online data backup and recovery services for personal computers and server data; and intellectual property management services consisting of escrow services to protect and manage source code and other proprietary information with a trusted, neutral third party.party and domain name management services.

        In addition to our core records management and off-site data protection services, we sell storage materials, including cardboard boxes and magnetic media, and provide consulting, facilities management, fulfillment and other outsourcing services.

        Iron Mountain was founded in 1951 in an underground facility near Hudson, New York. Now in our 5354rdth year, we have experienced tremendous growth and organizational change, particularly since successfully completing the initial public offering of our common stock in February 1996. Since then, we have built ourselves from a regional business with limited product offerings and annual revenues of $104 million in 1995 into the leader in recordsinformation storage and information managementprotection services, providing a full range of services to customers in markets around the world. For the year ended December 31, 2003,2004, we had total revenues of $1.5$1.8 billion.

        TheOur growth since 1995 has been accomplished primarily through the acquisition of U.S. and international records managementinformation storage and protection services companies. The goal of our current acquisition program is to supplement internal growth by continuing to establish a footprint in targeted international markets and adding fold-in acquisitions both in the U.S. and internationally. Having substantially completed our North American geographic expansion by the end of 2000, we shifted our focus from growth through acquisitions to internal revenue growth. In 2001, as a result of this shift, internal revenue growth exceeded growth through acquisitions for the first time since we began our acquisition program in 1996. This was also the case in 2002 and 2003, and2003. In 2004, revenue growth from acquisitions exceeded internal revenue growth due primarily to the acquisition of the records management operations of Hays plc ("Hays IMS") in July 2003. In the absence of unusual acquisition activity, we expect this trend to continue.achieve most of our revenue growth internally in 2005 and beyond. We expect to achieve our internal revenue growth through a sophisticated new sales and account management coverage model that is designed to drive incremental revenue by acquiring new customer relationships, increasing the revenue generated by existing customer relationships and by effectively selling a wide range of complementary



records management and ancillarydata protection services to expand our new and existing customer relationships.

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        In July 2003, we and Iron Mountain Europe ("IME"), our European joint venture, completed the acquisition of the records management operations of Hays plc ("Hays IMS") in two simultaneous transactions for aggregate cash consideration (including transactions costs) of approximately 205 million British pounds sterling ($333 million). IME acquired the European operations and we acquired the U.S. operations. IME's acquisition of Hays IMS has more than doubled our revenue base in Europe and has significantly strengthened our energy and U.K. public sector business lines. Since the acquisition, we have been integrating the cultures, operating systems and procedures, and information technology systems of IME and Hays IMS.

        In February 2004, we completed the acquisition of Mentmore plc'sthe 49.9% equity interest held by Mentmore plc ("Mentmore") in IMEIron Mountain Europe Limited ("IME"), our European joint venture, for total consideration of 82.5 million British pounds sterling ($154 million) in cash. Included in this amount is the repayment of all trade and working capital funding owed to Mentmore by IME. Completion of the transaction givesgave us 100% ownership of IME, affording us full access to all future cash flows and greater strategic and financial flexibility.

        In November 2004, we acquired Connected Corporation ("Connected") for total cash consideration of $109 million (net of cash acquired). Connected is the technology and market leader in the protection, archiving and recovery of distributed data. Our acquisition of Connected builds on our mission to protect our customers' information and protect our customers through compliant records management.

As of December 31, 2003,2004, we provided services to over 200,000235,000 customer accounts in 8285 markets in the U.S. and 5863 markets outside of the U.S., employed over 13,00014,500 people and operated approximately 800830 records management facilities in the U.S., Canada, Europe and Latin America.

B. Description of Business.

The RecordsInformation Storage and Information ManagementProtection Services Industry

Overview

        Companies in the recordsinformation storage and information managementprotection services industry store and manage information in a variety of media formats, which can broadly be divided into physical and electronic records, and provide a wide range of services related to the records stored. We refer to our general physical records storage and management services as business records management. We define physical records to include paper documents, as well as all other non-electronic media such as microfilm and microfiche, master audio and videotapes, film, X-rays and blueprints. Electronic records include various forms of magnetic media such as computer tapes and hard drives and optical disks. We include in our electronic records storage and management services (1) off-site data protection and (2) digital archiving services.

Physical Records

        Physical records may be broadly divided into two categories: active and inactive. Active records relate to ongoing and recently completed activities or contain information that is frequently referenced. Active records are usually stored and managed on-site by the organization that originated them to ensure ready availability. Inactive physical records are the principal focus of the recordsinformation storage and information managementprotection services industry. Inactive records consist of those records that are not needed for immediate access but which must be retained for legal, regulatory and compliance reasons or for occasional reference in support of ongoing business operations. A large and growing specialty subset of the physical records market is medical records. These are active and semi-active records that are often stored off-site with and serviced by a recordsinformation storage and information managementprotection services vendor. Special regulatory requirements often apply to medical records.

Electronic Records

        Electronic records management focuses on the storage of, and related services for, computer media that is either a backup copy of recently processed data or archival in nature. Customer needs for data backup and recovery and archiving are distinctively different. Backup data exists because of the need of many businesses to maintain backup copies of their data in order to be able to recover the data in the event of a system failure, casualty loss or other disaster. It is customary (and a best

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best-practice)practice) for data processing groups to rotate backup tapes to off-site locations on a regular basis and to require multiple copies of such information at multiple sites. We refer to these services as off-site data protection.

        In addition to the physical rotation and storage of backup data, we offer electronic vaulting services as an alternative way for businesses to transfer data to us, and to access the data they have stored with us. Electronic vaulting is a Web-based service that automatically backs up computer data over the Internet and stores it off site in one of our secure data centers. In early 2003, we announced an expansion of the electronic vaulting service to include backup and recovery for personal computer data, answering customers' needs to protect critical business data, which is often orphaned and unprotected on employee laptops and desktop personal computers. In November 2004, we acquired Connected, the market leader in the backup and recovery of this distributed data. We refer to the physical rotation and storage of backup data and electronic vaulting as data protection services.

        There is a growing need for better ways of archiving data for legal, regulatory and compliance reasons and for occasional reference in support of ongoing business operations. Historically, businesses have relied on backup tapes for storing archived data in electronic format, but this process can be costly and ineffective when attempting to search and retrieve the data for litigation or other needs. In addition, many industries, such as healthcare and financial services, are facing increased governmental regulation mandating the way in which electronic records are stored and managed. To help customers meet these growing storage challenges, we introduced digital archiving services. We have experienced early market adoption of these services, especially for e-mail archiving, which enables businesses to identify and retrieve electronic records quickly and cost-effectively, while maintaining regulatory compliance.

Growth of Market

        We believe that the volume of stored physical and electronic records will continue to increase for a number of reasons, including: (1) the rapid growth of inexpensive document producing technologies such as facsimile, desktop publishing software and desktop printing; (2) the continued proliferation of data processing technologies such as personal computers and networks; (3) regulatory requirements; (4) concerns over possible future litigation and the resulting increases in volume and holding periods of documentation; (5) the high cost of reviewing records and deciding whether to retain or destroy them; (6) the failure of many entities to adopt or follow policies on records destruction; and (7) audit requirements to keep backup copies of certain records in off-site locations.

        We believe that paper-based information will continue to grow, not in spite of, but because of, new "paperless" technologies such as e-mail and the Internet. These technologies have prompted the creation of hard copies of such electronic information and have also led to increased demand for electronic records services, such as the storage and off-site rotation of backup copies of magnetic media. In addition, we believe that the proliferation of digital information technologies and distributed data networks has created an emerging need for efficient, cost-effective, high quality solutions for digital archiving and the management of electronic documents.

Consolidation of a Highly Fragmented Industry

        There was significant consolidation within the highly fragmented recordsinformation storage and information managementprotection services industry in North America from 1995 to 2000.2000 and at a slower but continuing pace in recent years. Most recordsinformation storage and information managementprotection services companies serve a single local market, and are often either owner-operated or ancillary to another business, such as a moving and storage company. We believe that the consolidation trend, both in North America and other regions, will continue because of the industry's capital requirements for growth, opportunities for large recordsinformation storage and information managementprotection services providers to achieve economies of scale and customer demands for more sophisticated technology-based solutions.



        We believe that the consolidation trend in the industry is also due to, and will continue as a result of, the preference of certain large organizations to contract with one vendor in multiple cities and countries for multiple services. In particular, customers increasingly demand a single, large, sophisticated company to handle all of their important physical and electronic records needs. Large

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national and multinational companies are better able to satisfy these demands than smaller competitors. We have made, and intend to continue to make, acquisitions of our competitors, many of whom are small, single citysingle-city operators.

Description of Our Business

        We generate our revenues by providing storage for a variety of information media formats, core records management services and an expanding menu of complementary products and services to a large and diverse customer base. Providing outsourced storage for records and information is the mainstay of our customer relationships and provides the foundation for our revenue growth. The core services, which are a vital part of a comprehensive records management program, are highly recurring in nature and therefore very predictable. Core services consist primarily of the handling and transportation of stored records and information. In our secure shredding business, core services consist primarily of the scheduled collection and handling of sensitive records. In 2003,2004, our storage and core service revenues represented approximately 87%86% of our total revenues. In addition to our core services, we offer a wide array of complementary products and services such as performing special project work, selling records and information management services related products, providing fulfillment services and consulting on records management issues. These services address more specific needs and are designed to enhance our customers' overall records management programs. These services complement our core services; however, they are more episodic and discretionary in nature. Revenue generated by our business records and off-site data protection businesses includes both core and complementary components.

        Our various operating segments offer the products and services discussed below. In general, our business records management segment offers records management, secure shredding, healthcare information services, vital records services, and service and courier operations in the U.S. and Canada. Our off-site data protection segment offers data backup and disaster recovery services, vital records services, service and courier operations, and intellectual property protectionmanagement services in the U.S. Our international segment offers elements of all our product and services lines outside the U.S. and Canada. Our corporate and other segment includes our fulfillment, consulting and digital archiving services. Some of our complementary services and products are offered within all of our segments. The amount of revenues derived from our business records management, off-site data protection, international, and corporate and other operating segments and other relevant data, including financial information about geographic areas, for fiscal years 2001, 2002, 2003 and 20032004 are set forth in Note 12 to Notes to Consolidated Financial Statements.

Business Records Management

        The hard copy business records stored by our customers with us by their nature are not very active. These types of records are stored in cartons packed by the customer. We use a proprietary order processing and inventory management system known as theSafekeeperPLUS® system to efficiently store and later retrieve a customer's cartons. Storage charges are generally billed monthly on a per storage unit basis, usually either per carton or per cubic foot of records, and include the provision of space, racking, computerized inventory and activity tracking and physical security.

Off-Site Data Protection

        Off-site data        Data protection services consist of the storage and rotation of backup computer media as part of corporate disaster recovery and business continuity plans. Computer tapes, cartridges and disk packs are transported off-site by our courier operations on a scheduled basis to secure, climate-controlled facilities, where they are available to customers 24 hours a day, 365 days a year, to facilitate data



recovery in the event of a disaster. We use various proprietary information technology systems such asMediaLink™ andSecureBase™ software to manage this process. We also manage tape library relocations and support disaster recovery testing and execution. In addition, we have introducedoffer electronic vaulting services as part of our off-site data protection services product line. Our electronic

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vaulting service automatically backs up personal computer and server data over the Internet and stores it off site in one of our secure data centers, always available in the event of a disaster.

Healthcare Information Services

        Healthcare information services principally include the handling, storage, filing, processing and retrieval of medical records used by hospitals, private practitioners and other medical institutions. Medical records tend to be more active in nature and are typically stored on specialized open shelving systems that provide easier access to individual files. Healthcare information services also include recurring project work and ancillary services. Recurring project work involves the on-site removal of aged patient files and related computerized file indexing. Ancillary healthcare information services include release of information (medical record copying), temporary staffing, contract coding, facilities management and imaging.

Vital Records Services

        Vital records contain critical or irreplaceable data such as master audio and video recordings, film software source code and other highly proprietary information. Vital records may require special facilities or services, either because of the data they contain or the media on which they are recorded. Our charges for providing enhanced security and special climate-controlled environments for vital records are higher than for typical storage functions. We provide the same ancillary services for vital records as we provide for our other storage operations.

Service and Courier Operations

        Service and courier operations are an integral part of a comprehensive records management program for all physical media including paper and electronic records. They include adding records to storage, temporary removal of records from storage, refiling of removed records, permanent withdrawals from storage, and destruction of records. Service charges are generally assessed for each procedure on a per unit basis. TheSafekeeperPLUS® system controls the service processes from order entry through transportation and invoicing for business records management while theMediaLink™ andSecureBase™ systems manage the process for the off-site data protection services business.

        Courier operations consist primarily of the pickup and delivery of records upon customer request. Charges for courier services are based on urgency of delivery, volume and location and are billed monthly. As of December 31, 2003,2004, we were utilizing a fleet of more than 2,000approximately 2,900 owned or leased vehicles.

Secure Shredding

        Secure shredding is a natural extension of our records management services, completing the lifecyclelife cycle of a record. The service involves the shredding of sensitive documents for corporate customers that, in many cases, also use our services for management of less sensitive archival records. We believe that customers are motivated by increased privacy regulation and the desire to protect their proprietary trade secrets. These services typically include the scheduled pick-up of loose office records which customers accumulate in specially designed secure containers we provide. Complementary to our shredding operations is the sale of the resultant waste paper to third-party recyclers. Through a combination of plant basedplant-based shredding operations and mobile shredding units comprised of custom built trucks, we are able to offer secure shredding services to our customers in all of our existing business records management markets throughout the U.S. and Canada. We seek to expand our presence in this



business through acquisitions and internal start-ups that leverage our existing records management infrastructure.

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Intellectual Property ProtectionManagement Services

        We provide intellectual property protectionmanagement services through our wholly-owned subsidiary, DSI Technology Escrow Services,Iron Mountain Intellectual Property Management, Inc. DSI("IPM"). IPM specializes in third party technology escrow services that protect intellectual property assets such as software source code. In addition, DSIIPM assists in securing intellectual property as collateral for lending, investments and other joint ventures, in managing domain name registrations and transfers, and providesin providing expertise and assistance to brokers and dealers in complying with electronic records regulations of the SEC.

Digital Archiving Services

        Our digital archiving services focus on archiving digital information with long-term preservation requirements. These services represent the digital analogy to our physical records management services. Because of increased litigation risks and regulatory mandates, companies are increasingly aware of the need to apply the same records management policies and retention schedules to electronic data as they do physical records. Typical digital records include e-mail, e-statements, images, electronic documents retained for legal or compliance purposes and other data documenting business transactions.

        The growth rate of mission-critical digital information is accelerating, driven in part by the use of the Internet as a distribution and transaction medium. The rising cost and increasing importance of digital information management, coupled with the increasing availability of telecommunications bandwidth at lower costs, may create meaningful opportunities for us. We continue to cultivate marketing and technology partnerships to support this anticipated growth.

        We believe the issues encountered by customers trying to manage their electronic records are similar to the ones they face in their business records management programs and consist primarily of: (1) storage capacity and the preservation of data; (2) access to and control over the data in a secure environment; and (3) the need to retain electronic records due to regulatory compliance or for litigation support. Our digital archiving service is representative of our commitment to address evolving records management needs and expand the array of services we offer.

Complementary Services and Products

        We offer a variety of additional services which customers may request or contract for on an individual basis. These services include conducting records inventories, packing records into cartons or other containers, and creating computerized indices of files and individual documents. We also provide services for the management of active records programs. We can provide these services, which generally include document and file processing and storage, both off-site at our own facilities and by supplying our own personnel to perform management functions on-site at the customer's premises.

        Other complementary lines of business that we operate include fulfillment services and professional consulting services. Fulfillment services are performed by our wholly-owned subsidiary, COMAC, Inc. ("COMAC"). COMAC stores customer marketing literature and delivers this material to sales offices, trade shows and prospective customers' sites based on current and prospective customer orders. In addition, COMAC assembles custom marketing packages and orders, and manages and provides detailed reporting on customer marketing literature inventories.

        We provide professional consulting services to customers, enabling them to develop and implement comprehensive records and information management programs. Our consulting business draws on our experience in recordsinformation storage and information managementprotection services to analyze the practices of companies and assist them in creating more effective programs of records and information management. Our



consultants work with these customers to develop policies for document review, analysis and evaluation and for scheduling of document retention and destruction.

        We also sell: (1) a full line of specially designed corrugated cardboard, metal and plastic storage containers; (2) magnetic media products including computer tapes, cartridges and drives, tape cleaners

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and supplies and CDs; and (3) computer room equipment and supplies such as racking systems, furniture, bar code scanners and printers.

Financial Characteristics of Our Business

        Our financial model is based on the recurring nature of our revenues. The historical predictability of this revenue stream and the resulting operating income before depreciation and amortization (OIBDA)("OIBDA")1 allow us to operate with a high degree of financial leverage. Our primary financial goal has always been, and continues to be, to increase consolidated OIBDA in relation to capital invested, even as our focus has shifted from growth through acquisitions to internal revenue growth. Our business has the following financial characteristics:

1
For a more detailed definition and reconciliation of OIBDA and a discussion of why we believe this measure provides relevant and useful information to our current and potential investors, see Item 7. "Management's Discussion and Analysis of Financial Condition and Results of Operations—Non-GAAP Measures."

Recurring Revenues.  We derive a majority of our consolidated revenues from fixed periodic, usually monthly, fees charged to customers based on the volume of records stored. Our quarterly revenues from these fixed periodic storage fees have grown for 6064 consecutive quarters. Once a customer places physical records in storage with us and until those records are destroyed or permanently removed, for which we typically receive a service fee, we receive recurring payments for storage fees without incurring additional labor or marketing expenses or significant capital costs. Similarly, contracts for the storage of electronic backup media consist primarily of fixed monthly payments. In each of the last five years, storage revenues, which are stable and recurring, have accounted for approximately 58%over 57% of our total revenues. This stable and growing storage revenue base also provides the foundation for increases in service revenues and OIBDA.

Historically Non-Cyclical Storage Business.  We have not experienced any significant reductions in our storage business as a result of past general economic downturns, although we can give no assurance that this would be the case in the future. We believe that companies that have outsourced records and information management services are less likely during economic downturns to incur the move-out costs and other expenses associated with switching vendors or moving their records and information management services programs in-house. However, during this most recent economic slowdown, the rate at which some customers added new cartons to their inventory was below historical levels. The net effect of these factors is the continued growth of our storage revenue base, albeit at a lower rate.

2
We define "Carton" as a measurement of volume equal to a single standard storage carton, approximately 1.2 cubic feet.

3
We define "Net Carton Growth From Existing Customers" as the net increase in Cartons attributable to existing customers. This calculation excludes our Latin American and European operations as well as a portion of our medical records operations.

Inherent Growth from Existing Physical Records Customers.  Our physical records customers have on average generated additional Cartons2cartons at a faster rate than stored Cartonscartons have been destroyed or permanently removed. From January 1, 1998 through December 31, 2001, our annual Net Carton Growth From Existing Customers3 rangedWe estimate that inherent growth from existing customers represents approximately 4% to approximately 6%. For the years ended December 31, 2002 and 2003, Net Carton Growth from Existing Customers was between 3% to 4%.half of total net volume growth in North America. We believe the consistent growth of our physical records storage revenues is the result of a number of factors, including: (1) the trend toward increased records retention; (2) customer satisfaction with our services; and (3) the costs and

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