Dec 7, 3:19 PM EST

Survey: US gas prices fall 12 cents per gallon

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CAMARILLO, Calif. (AP) -- A national survey reveals the average price of regular gasoline has plunged another 12 cents a gallon over the past two weeks, to $2.72.

Industry analyst Trilby Lundberg said Sunday that the decline continues a nationwide trend.

Lundberg says lower crude oil prices are continuing to drive prices down, along with an abundant oil supply and the rising value of the U.S. dollar.

The highest-priced gas in the Lower 48 states was found in San Francisco at $3.04 a gallon. The lowest was in Albuquerque at $2.38 a gallon.

California's lowest average was in Sacramento, $2.80 a gallon.

The average price for midgrade gas in the U.S. is $2.96. For premium it's $3.12.

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