CAMARILLO, Calif. (AP) — 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.

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