Thank you, Bill. I'd like to start the update on international by reminding you of our priorities, balancing growth and returns. As you know, Wal-Mart International is an important contributor to topline growth. During the first quarter, we delivered a respectable top line. We feel good about the net and comp sales, especially given last year's really strong first quarter, the loss of leap day and weather issues. As a reminder, our first quarter last year was our strongest of FY '13, with international net sales on a reported basis up 15% and operating income up 21.2%.
During this year's first quarter, on a reported basis, Wal-Mart International grew net sales 2.9% to $33 billion. On a constant currency basis, Wal-Mart International's first quarter sales were $33.8 billion, up 5.4%, a stronger dollar against key currencies impacted international results more negatively than expected and decreased the top line by $1 billion. Our acquisition increased sales by $200 million.
Our stores in the U.K., Africa, Mexico, Central America, Brazil, Chile, Argentina, China and India delivered positive comp store sales. Comp sales declined in Canada and Japan. As mentioned, last year had an extra leap day for leap year and the comparison to last year impacted sales and customer traffic by about 100 basis points.
From a relative performance point of view, we were encouraged with our market share gains around the world during the quarter. We grew our share in Canada, Africa, Chile, Argentina, Central America, China and Japan. We maintained market share in the U.K. and Mexico. And although we did not grow overall share in Brazil, we did increase share in food and consumables.
Like revenue growth, another important priority is improving our returns. We were disappointed with our operating income performance this quarter, which impacted returns. In fact, we had a decline in profitability versus last year. This was partially due to having 1 less day of sales in all markets, as well as specific drivers that I'll elaborate on as I review the markets.
Operating income was $1.3 billion and decreased 4.7% on a reported basis versus last year. On a constant currency basis, operating income declined 2.4%. Our gross profit rate was slightly down and operating expenses grew faster than sales. Several factors contributed to us not leveraging expenses: softer sales, wage inflation, higher indirect taxes and strategic investments including those in eCommerce.
These are investments beyond those covered in the corporate and support budget. Unfortunately, in the international markets, we have less workforce flexibility than in the U.S. In many markets, it takes more time to introduce and implement productivity improvements that help us to adjust wages to sales realities. Given our current headwinds, I expect second quarter expenses to remain under pressure. Let me assure you that all management teams are focused on reducing expenses throughout our operating segment, and we expect to demonstrate improvement in the second half of the year.
Another priority has been inventory management. I'm pleased to say we've seen some improvement in this quarter that was aided by Easter being 1 week earlier for the markets that celebrate the holiday. Constant currency inventory increased 7.1% over last year, an improvement from the first quarter last year. On a reported basis, inventory was up only 3.6%.
Now let's get into the results for our larger markets. The following discussion is on a constant currency basis and unless otherwise stated total sales and comp sales are presented on an unadjusted nominal calendar basis. Let's begin with EMEA. The U.K. had a solid first quarter in a challenging market. Personal income grew much lower than the cost of essential items, putting pressure on all consumers. According to Kantar Worldpanel, the market experienced stronger growth in the first quarter than in previous quarters, driven solely by inflation, while market volumes declined. The U.K. market as a whole experienced significant supply integrity issues within the quarter related to meat, ASDA responded by carrying out robust and rigorous testing and continues to focus on transparency for customers.
In the first quarter, ASDA's net sales rose 2.6% and sales excluding fuel increased 3%. Comparable sales rose by 1.3%, excluding fuel, growing ahead of the market. Average comp ticket increased by 1.6%, while comp traffic decreased by 0.3%. As this market share was flat at 17.9% for the 12 weeks ended March 17, the latest data reported by Kantar's Worldwide Panel Total Till Roll. A bright spot continues to be ASDA's online grocery sales, which grew more than 16%.
During the quarter, ASDA increased investment and reducing the price of key food essentials. As a result, ASDA's internal inflation measures continued to be significantly below the market and comparable food volumes were positive in the first quarter. Reinforcing this strategy, ASDA also won the Grocer 33 lowest-priced supermarket for 12 of the 13 weeks in Q1.
Strong price and value gaps, combined with events such as Valentine's Day, Easter and Mom's day, drove food sales growth, with Easter categories such as lamb, salmon and bakery significantly outperforming. A January clearance event and seasonably appropriate weather drove strong general merchandise sales.
ASDA's gross profit margin declined slightly in the quarter driven by sales mix and price investment. Considering the impact of fuel sales, operating expenses grew slower than sales. The We Operate For Less program continued to deliver savings, offsetting some of the cost headwinds across energy, property taxes, insurance and environmental tariffs, along with some weather-related costs. Operating income decreased by 0.8% from the prior year.
Moving to Canada. Wal-Mart Canada faced a challenging quarter, as consumer spending weakened due to higher household debt levels. Our results were impacted by the unseasonably colder weather this year, versus unseasonably warm weather last year and the leap year overlap. Net sales grew 6.1%, but Canada had a decline in operating income and did not leverage expenses. Comparable sales decreased 1.3%, with comp ticket up 0.7% and comp traffic declining 2%. We had strong comp sales in food, consumables and home lines, but continue to see softer sales in entertainment.
The colder weather also impacted sales and hard lines and apparel. However, in the first quarter's challenging environment, we drove market share gains of 120 basis points in the Nielsen Company measured categories of food, consumables and health and wellness.
Regarding profitability, gross profit rate increased due to improved initial margins from private label and direct important gains, as well as reduced shrink. However, operating expenses grew faster than sales, primarily due to negative comp store sales, the lapping of costs related to the year-over-year growth in new store base and investments in eCommerce.
Moving to Sub-Saharan Africa. As you know, Massmart is a publicly held company in South Africa and only announces results every 6 months. For the 14 weeks ending March 31, Massmart increased sales by 10.3% and comparable sales by 6%. While these are good numbers, the trends are slower than we reported for Massmart at the close of fiscal 2013. The South African consumer environment remains cautious and sales growth is forecasted to be under pressure for the remainder of the year. Also note that Massmart will hold its annual meeting on May 22.
Now to Latin America. The following summary includes the consolidated results of Mexico and Central America and is on a U.S. GAAP basis. Walmex separately reports its earnings under IFRS, so some numbers are different from Walmex-reported numbers.
Walmex results for the first quarter were mixed. We had solid results in Central America and disappointing performance in Mexico that impacted the overall business. For the quarter, net sales grew 5.5%. Gross margin increased 60 basis points versus last year driven by improvements in both Mexico and Central America. Operating expenses grew more than sales. Management is focused on reducing expenses and increasing productivity savings. Operating income for the quarter grew 7.5%, faster than sales, primarily due to strong gross profit margins.
For the first quarter, Mexico's sales increased 5.6% over last year and comparable store sales grew 1.1%. Average comp ticket in Mexico increased 4.4% and comp traffic decreased 3.3% over last year. Traffic was negative due to calendar effects and a general market slowdown in consumption. In relation to the market, we maintained market share on total sales, but Mexico's first quarter comp store sales for the self-service formats grew 0.8%. This was slower than ANTAD's comp store sales report for the rest of the industry, excluding Walmex, at 1.4%.
In Mexico, gross margin was up 48 basis points. Expenses grew 8.8%, above our sales growth. The biggest increases in expenses were in physical infrastructure investments like maintenance, repairs and depreciation. Operating income grew 5.5%.
Central America is on track to deliver good results. Systems integration will conclude as expected in the second quarter and markets that were lagging, like Guatemala, are improving. Central America increased net sales from the previous year by 4.9%. Comparable store sales increased 2% on a constant currency basis. Gross margin increased 124 basis points versus last year as a result of better merchandising and EDLP execution. The transition to EDLP in our Central American countries is completed. Expenses grew more than sales. Operating income increased 40%.
Moving on to Brazil. Brazil grew sales in the first quarter and had a slight operating profit. We continue our mantra of EDLC and EDLP, maintaining a 7% price gap in self-service formats, and we're pleased that we're gaining traction with customers.
First quarter retail sales in Brazil grew 5.5% from last year with comparable sales growing 3.7%. Ticket grew 7.2%, and comp traffic declined 3.5% when compared to last year. There was strong performance in consumables, food and perishables as we gained market share in these categories. Sales of general merchandise were weak as we scaled down interest-free credit offerings. Gross profit rate increased slightly as a result of lower shrink and better markdown management, but we did not leverage operating expenses in Brazil due to our lower rate of comp store growth specifically in our wholesale formats and wage inflation.
Like Walmex and Massmart, Walmart Chile is also a publicly held company and will release first quarter earnings on May 30.
Moving to Asia. Walmart China grew sales and operating income during the first quarter. Net sales for the first quarter grew 5.4% over last year despite a weaker than expected Chinese New Year. Comparable store sales growth was 1%. As more Chinese families own a car and other amenities for their home, there is much greater trip consolidation. Comp ticket grew 8.9% in China, but traffic declined 7.9%. Traffic declines are consistent with the overall market.
First quarter gross profit rate was slightly down from last year due to our investment in price. However, Walmart China leveraged operating expenses even with wage inflation. In China, we are near the end of our planning stage of our EDLP transition and have started to take a few steps. As in other markets, this is a multiyear effort, and we know it'll take time for our customers to see and appreciate the value brought to them by EDLP.
On to Japan, where the economy continues to slow. Walmart Japan's net sales and comp sales decreased 1.7% and 2.3%, respectively, reflecting cautious consumer behavior. First quarter comp traffic decreased 1.9% and ticket decreased 0.4%. Traffic decreased due to an increase in competition in the convenience-related formats. According to statistics released by the Japanese Ministry of the Economy, Trade and Industry, or METI, overall supermarket comparable sales for the first quarter declined by 3.3% from last year. So on a positive note, we outperformed the market.
Walmart Japan's gross profit rate decreased by 96 basis points due to our increased investment in lower prices. Walmart Japan missed leveraging expenses by a slight margin due to the sales decline, but year-over-year operating expenses were down even with higher remodeling costs. Accordingly, Walmart Japan had a slight operating loss this quarter compared to positive operating income in the prior year.
Turning to the opportunities in eCommerce. We are excited about the global capabilities we are strengthening and expanding in the key markets of the U.K., Brazil and China. ASDA's continued focus on offering a convenient shopping experience for customers drove strong online sales in the first part of 2013. During Q1, ASDA completed the rollout of Wi-Fi across our stores to enable a better smart device shopping experience.
In addition, our ASDA team added its grocery Click & Collect offer in approximately 100 stores. ASDA also significantly expanded grocery home shopping capacity by opening a third dedicated online fulfillment center in Nottingham, providing increased accuracy, efficiency and delivery options. Customers can now tap into 20,000 additional delivery slots per week.
Over the last 6 months, in Brazil, our Walmart.com.br site has become the largest traffic eCommerce site. For the first quarter, online sales in Brazil increased over 40%.
In the previous year acquisition of Yihaodian, one of the fastest-growing eCommerce businesses in China, we now have a platform to compete in a market with broadband penetration that has exceeded the U.S. Yihaodian provides consumer goods on a same-day basis in Tier 1 cities, Shanghai, Beijing and Guangzhou.
We grew market share already this year in eCommerce in the U.K., Brazil and China, and the integration of technology into our business is a key for future growth. We will expand our successes and learnings from the U.K., Brazil and China into other markets such as Mexico, Japan and Canada.
We are also focused on building a world-class compliance program across the globe. Our comprehensive program spans 14 different compliance dimensions that address areas from ethical sourcing to licenses and permits. We are strengthening what already existed in each market, adding subject matter expertise, significant investments in talent, process, systems and training.
For example, we recently announced a $16.2 million, 3-year investment in food safety in China. We are reinforcing Walmart culture based on our basic beliefs of respect for the individual, strive for excellence, service to the customer and as always, on a foundation of integrity. With our compliance program, we will operate more effectively in each market, and we are building a solid foundation for future growth.
In closing, it's been a tough start to the beginning of the year, but we're focused in each of our markets and have tighter discipline in our execution. As Mike said earlier, we are simplifying, we are focused and we are prioritizing. With our current outlook, we do not expect to leverage expenses in the second quarter, but we've begun to take actions that will demonstrate improvement as we progress through the year. For example, we're working hard to accelerate the improvements that we will receive from working with our global business process group.
With that, we remain focused on the core tenets of our operating model and being the best Walmart we can be. Our global consumer is challenged with their household budgets, and we need to continue to provide them with the price and value they need.
Now I'll turn it over to Roz for the update on Sam's. Roz?