CAMARILLO, Calif. -- The national average price for regular gasoline has risen about 15 cents in the last two weeks.

In Oregon, the average price for regular, unleaded gasoline is $3.67 a gallon. The average price of regular gasoline nationwide on Friday was $3.62 a gallon, up 15 cents from two weeks ago.

That's according to the Lundberg Survey of 7,000 stations nationwide released Sunday.

Regular gasoline is up 55 cents since 2008 began.

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Of the cities surveyed, the cheapest price was in Cheyenne, Wyoming, where a gallon of regular cost $3.39, on average. The highest average was in San Francisco at $3.95.