CAMARILLO, Calif. (CBSDFW.COM/AP) — Americans continue to shell out more money at the gas pump. The average U.S. price of regular-unleaded rose a nickel over the past two weeks, to $3.21 per gallon.

Industry analyst Trilby Lundberg of the Lundberg Survey said gas prices will likely hold steady now that crude oil costs have stopped rising.

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The price at the pump is 97 cents higher than it was a year ago.

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Nationwide, the highest average price for regular-grade gas is in the San Francisco Bay Area, at $4.39 per gallon. The lowest average is in Baton Rouge, Louisiana, at $2.65 per gallon.

The average price of diesel in the survey taken on July 9 was $3.30 a gallon, up three cents from two weeks earlier.

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