What is the expected capex for the company in 2021 
 the morning progresses.
As I mentioned earlier, our revenue grew $40 billion last year, putting us at least a year ahead of where we thought we might be. So we need to lean in more aggressively in key markets with increased capital and fulfillment capacity, supply chain, automation and technology. This new infrastructure will allow us to expand eCommerce assortment, enabling us to reduce both shipping time and costs. We'll step up automation in DCs to deliver aisle and department-ready pallets, stores. We'll continue to refresh our existing stores by enhancing pickup and delivery capacity, merchandising programs and efficiency initiatives.
In India, we see significant growth opportunities for Flipkart and PhonePe. It's exciting to see the emerging middle class rapidly adopting eCommerce and using their mobile phones to use money transfer, insurance and other services. Meanwhile, we'll step up technology investments to continue upgrading legacy enterprise systems and customer-facing technology. We're on a multi-year journey of modernizing our tech stack and capabilities to increase the efficient use of the cloud and simplify customer and associate experiences.
As we accelerate investment, capex is expected to be around $14 billion this year with most of the increase versus last year in the U.S. Over the next few years, we expect capex to be around 2.5% to 3% of sales. While this is higher than the past few years, it is far below the capex peak of 4% to 5% of sales during the period of heavy Supercenter growth. This spend will allow us to fully optimize our strategy, and in turn, accelerate the company's top-line and profit growth rates in the mid to long-term.
After years of transition, these investments should put us in position for 4% plus sales growth and operating income growth rates higher than sales. 4% top-line growth would basically be the equivalent of adding a Fortune 100 company every year. Our unique financial strength allows us to continue to deliver strong returns to shareholders while growing the business. And as you saw this morning, we increased our dividend for the 48th consecutive year. And we authorized a new $20 billion share repurchase program, which we plan to execute over the next three years or so. There are so many initiatives under way that give us confidence that these are the right investments at the right time. We're already seeing proof points, and you'll hear more about these later on.
We expect continued strong growth in the U.S. businesses and expect even higher international growth rates as we focus on key markets and making money in new ways. We'll continue improving margin mix through an enhanced general merchandise offering, new brands and marketplace growth with a greater push toward expanding fulfillment and other services for sellers. We'll drive existing and new customer growth through initiatives like Walmart+. We'll grow sales and profit increasingly with growing higher margin businesses and advertising, financial services, marketplace, healthcare services and the like. Our operating discipline will continue to sharpen. After a pause in FY '22, primarily because of additional wage investments, I expect expense leverage to continue at or above 20 basis points a year.
Let me turn now specifically to our expectations for this current year. We feel very good about the underlying business and ability to compete from a position of strength. However, we're still facing similar COVID-related challenges as we have over the past several quarters, which caused us to suspend guidance and continues to make short-term guidance very challenging. Despite that we want to give you the best view we can at this time given what we know and what we see right now.
We know we'll have both headwinds and tailwinds this year, the balance and degree of which isn't clear. As the year progresses, we hope to get more clarity around COVID impacts, vaccine efficacy and availability, the scale and duration of economic stimulus and the mid-term economic climate globally. Even if conditions stay generally similar
 the morning progresses.
As I mentioned earlier, our revenue grew $40 billion last year, putting us at least a year ahead of where we thought we might be. So we need to lean in more aggressively in key markets with increased capital and fulfillment capacity, supply chain, automation and technology. This new infrastructure will allow us to expand eCommerce assortment, enabling us to reduce both shipping time and costs. We'll step up automation in DCs to deliver aisle and department-ready pallets, stores. We'll continue to refresh our existing stores by enhancing pickup and delivery capacity, merchandising programs and efficiency initiatives.
In India, we see significant growth opportunities for Flipkart and PhonePe. It's exciting to see the emerging middle class rapidly adopting eCommerce and using their mobile phones to use money transfer, insurance and other services. Meanwhile, we'll step up technology investments to continue upgrading legacy enterprise systems and customer-facing technology. We're on a multi-year journey of modernizing our tech stack and capabilities to increase the efficient use of the cloud and simplify customer and associate experiences.
As we accelerate investment, capex is expected to be around $14 billion this year with most of the increase versus last year in the U.S. Over the next few years, we expect capex to be around 2.5% to 3% of sales. While this is higher than the past few years, it is far below the capex peak of 4% to 5% of sales during the period of heavy Supercenter growth. This spend will allow us to fully optimize our strategy, and in turn, accelerate the company's top-line and profit growth rates in the mid to long-term.
After years of transition, these investments should put us in position for 4% plus sales growth and operating income growth rates higher than sales. 4% top-line growth would basically be the equivalent of adding a Fortune 100 company every year. Our unique financial strength allows us to continue to deliver strong returns to shareholders while growing the business. And as you saw this morning, we increased our dividend for the 48th consecutive year. And we authorized a new $20 billion share repurchase program, which we plan to execute over the next three years or so. There are so many initiatives under way that give us confidence that these are the right investments at the right time. We're already seeing proof points, and you'll hear more about these later on.
 We expect continued strong growth in the U.S. businesses and expect even higher international growth rates as we focus on key markets and making money in new ways. We'll continue improving margin mix through an enhanced general merchandise offering, new brands and marketplace growth with a greater push toward expanding fulfillment and other services for sellers. We'll drive existing and new customer growth through initiatives like Walmart+. We'll grow sales and profit increasingly with growing higher margin businesses and advertising, financial services, marketplace, healthcare services and the like. Our operating discipline will continue to sharpen. After a pause in FY '22, primarily because of additional wage investments, I expect expense leverage to continue at or above 20 basis points a year.
Let me turn now specifically to our expectations for this current year. We feel very good about the underlying business and ability to compete from a position of strength. However, we're still facing similar COVID-related challenges as we have over the past several quarters, which caused us to suspend guidance and continues to make short-term guidance very challenging. Despite that we want to give you the best view we can at this time given what we know and what we see right now.
We know we'll have both headwinds and tailwinds this year, the balance and degree of which isn't clear. As the year progresses, we hope to get more clarity around COVID impacts, vaccine efficacy and availability, the scale and duration of economic stimulus and the mid-term economic climate globally. Even if conditions stay generally similar