Vegetables are displayed at a vendors stand at the Italian Market, Thursday, April 12, 2012, in Philadelphia. A big decline in gas and energy costs drove a measure of U.S. wholesale prices lower in April. But outside that drop, inflation was tame. The Labor Department said Friday, May 11, 2012 that the producer price index, which measures price changes before they reach the consumer, dropped 0.2 percent last month. It was the first decline since December and the biggest drop since October. (AP Photo/Matt Rourke)

Associated Press
Vegetables are displayed at a vendors stand at the Italian Market, Thursday, April 12, 2012, in Philadelphia. A big decline in gas and energy costs drove a measure of U.S. wholesale prices lower in April. But outside that drop, inflation was tame. The Labor Department said Friday, May 11, 2012 that the producer price index, which measures price changes before they reach the consumer, dropped 0.2 percent last month. It was the first decline since December and the biggest drop since October. (AP Photo/Matt Rourke)
Vegetables are displayed at a vendors stand at the Italian Market, Thursday, April 12, 2012, in Philadelphia. A big decline in gas and energy costs drove a measure of U.S. wholesale prices lower in April. But outside that drop, inflation was tame. The Labor Department said Friday, May 11, 2012 that the producer price index, which measures price changes before they reach the consumer, dropped 0.2 percent last month. It was the first decline since December and the biggest drop since October. (AP Photo/Matt Rourke)
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