** FILE ** In this file photo taken March 9, 2011, a woman returns to her car after filling up at a gas station advertising regular gasoline on sale for $4.32 in San Diego. Americans paid more for food and energy in February, but outside those volatile categories inflation was tame. (AP Photo/Gregory Bull, file)

Photo by: Gregory Bull

** FILE ** In this file photo taken March 9, 2011, a woman returns to her car after filling up at a gas station advertising regular gasoline on sale for $4.32 in San Diego. Americans paid more for food and energy in February, but outside those volatile categories inflation was tame. (AP Photo/Gregory Bull, file)