Although we believe we compete effectively, our competitors may have greater financial resources allowing them to invest more in their business, greater sourcing capabilities allowing them to sell merchandise at lower prices, larger stores with more merchandise, longer operating histories with deeper customer relationships, more frequent customer visits, more effective advertising and more successful utilization of data analytics, artificial intelligence and other new and emerging technologies. Online and multi-channel retailers often have lower operating costs and focus on delivery services, thereby offering customers faster, guaranteed delivery times and low-price or free shipping. In addition, because our business strategy is based on offering superior levels of customer service to complement the products we offer, our cost structure is higher than some of our competitors, which also puts pressure on our margins.
With the increasing use of digital tools, our customers often begin their shopping experience online and are quickly able to compare prices, product assortment, product availability and feedback from other customers before purchasing products. We may be unable to differentiate ourselves or unable to anticipate and adapt to new or enhanced digital experiences offered by other retailers.
If we are unable to continue to manage in-stock inventory and costs, provide competitive delivery options, develop successful competitive strategies, including the maintenance of effective promotions, advertising and loyalty programs, develop and execute effective digital and omni-channel strategies or otherwise compete effectively, or if our competitors develop more effective strategies, we could lose customers and our sales and profits may decline.
We have increased annual revenues in the past five fiscal years from $12.6 billion in fiscal 2020 to $18.9 billion in fiscal 2025, with a compounded annual growth rate of approximately eight percent. Annual revenue growth is driven by increases in same store sales, the opening of new stores and the development of new commercial programs. Same store sales are impacted both by customer demand levels and by the prices we are able to charge for our products, which can also be negatively impacted by economic pressures. See "Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations" for further discussion of same store sales.