In US, the average price of regular-grade gasoline has jumped 6 cents over the past two weeks, to 2(point)26 US dollars a gallon, Industry analyst Trilby Lundberg said today, adding that the increase mostly results from an agreement of November 30 by major oil-producing countries to decrease output. Lundberg says, the current price is 20 cents a gallon above what it was one year ago. However, the 2016 average price is 31 cents below the 2015 average and 1.21 US dollars a gallon below the 2014 average.Gas in San Diego was the highest in the continental United States at 2.68 US dollars a gallon on average Friday. The US average diesel price is 2.48 US dollars, an increase of 4 cents from two weeks ago.