FILE - In this Feb. 20, 2012, file photo, customers walk into and out of a Wal-Mart store in Methuen, Mass. Wal-Mart Stores Inc. reported a 10.1 percent increase in first-quarter profit that beat Wall Street estimates, reported Thursday, May 17, 2012. The world’s largest retailer also offered an upbeat profit outlook for the current quarter. (AP Photo/Elise Amendola, File)

Associated Press
FILE - In this Feb. 20, 2012, file photo, customers walk into and out of a Wal-Mart store in Methuen, Mass.  Wal-Mart Stores Inc. reported a 10.1 percent increase in first-quarter profit that beat Wall Street estimates, reported Thursday, May 17, 2012. The world’s largest retailer also offered an upbeat profit outlook for the current quarter.  (AP Photo/Elise Amendola, File)
FILE - In this Feb. 20, 2012, file photo, customers walk into and out of a Wal-Mart store in Methuen, Mass. Wal-Mart Stores Inc. reported a 10.1 percent increase in first-quarter profit that beat Wall Street estimates, reported Thursday, May 17, 2012. The world’s largest retailer also offered an upbeat profit outlook for the current quarter. (AP Photo/Elise Amendola, File)
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