AMERCO engages in the provision of insurance, moving and storage operation businesses. It operates through the following business segments: Moving and Storage; Property and Casualty Insurance, and Life Insurance. The Moving and Storage segment consists of the rental of trucks, trailers, portable moving and storage units, specialty rental items, and self-storage spaces. The Property and Casualty Insurance segment involves in providing loss adjusting and claims handling for U-Haul through regional offices. The Life Insurance segment provides life and health insurance products primarily to the senior market through the direct writing and reinsuring of life insurance, medicare supplement, and annuity policies. The company was founded by Anna Mary Carty Shoen and Leonard Samuel Shoen in 1945 and is headquartered in Reno, NV.
Self-moving equipment rental revenues increased $172.4 million during fiscal 2019, compared with fiscal 2018. During fiscal 2019 we expanded the number of Company-owned locations along with independent dealers, and increased the number of trucks, trailers and towing devices in our rental fleet. In the third and fourth quarters we saw revenue improvements in our corporate account business. Revenue and transactions for both the One-way and in-town markets improved compared to fiscal 2018.
Self-storage revenues increased $43.4 million during fiscal 2019, compared with fiscal 2018. The average monthly amount of occupied square feet increased by 12.0% during fiscal 2019 compared with the same period last year. The growth in revenues and square feet rented comes from a combination of improved rates per square foot, occupancy gains at existing locations and from the addition of new facilities to the portfolio. Over the last twelve months, we added approximately 5.3 million net rentable square feet, a 17.0% increase, with approximately 1.5 million of that coming on during the fourth quarter of fiscal 2019.
The Company owns and manages self-storage facilities. Self-storage revenues reported in the consolidated financial statements represent Company-owned locations only. Self-storage data for our owned storage locations follows: