WASHINGTON - AUGUST 20: Navel oranges from South Africa are for sale at a Safeway grocery store August 20, 2007 in Washington, DC. The U.S. Labor Department released inflation data showing that U.S. food prices rose by 4.2 percent for the 12 months ending in July. According to the department's consumer price index, the price of oranges has increased by 19.8 percent from June of 2006 to June 0f 2007. (Photo by Chip Somodevilla/Getty Images)