CAMARILLO, Calif. -- The average U.S. price of regular-grade gasoline jumped 15 cents over past two weeks to $4.38 per gallon.

       Industry analyst Trilby Lundberg of the Lundberg Survey said Sunday that the current price sits just a nickel below the highest average price in history — $4.43, set on March 11.

       The average price at the pump is $1.36 higher than it was one year ago.

       Nationwide, the highest average price for regular-grade gas is in the San Francisco Bay Area, at $5.85 per gallon. The lowest average is in Tulsa, Oklahoma, at $3.80 per gallon.

       According to the survey, the average price of diesel soared 43 cents over two weeks, to $5.58 a gallon.