CAMARILLO, Calif. (CBS13/AP) — The average U.S. price of regular-grade gasoline fell 3 cents over past two weeks, to $3.46 per gallon.

Industry analyst Trilby Lundberg of the Lundberg Survey said Sunday that the price drop is partly because of a crash in crude oil costs.

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It was the first decline in gas prices in 14 weeks, Lundberg said. The average price at the pump is $1.24 higher than it was one year ago.

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Nationwide, the highest average price for regular-grade gas is in the San Francisco Bay Area, at $4.80 per gallon. The lowest average is in Houston, at $2.91 per gallon.

In Sacramento, the average price per gallon is $4.67, AAA reports.

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According to the survey, the average price of diesel was unchanged, at $3.69 a gallon.