The average price for regular gasoline at U.S. pumps jumped 8.5 cents in the past two weeks to a 13-month high of $3.6918 a gallon, according to Lundberg Survey Inc. The survey covers the period ended April 18 and is based on information obtained at about 2,500 filling stations by the Camarillo, California-based company. Prices are the highest since March 22, 2013. The average is 15.55 cents higher than a year ago, Lundberg said. Gasoline has risen 39.74 cents a gallon since bottoming out in February and is up 43 cents this year. “The most important factor right now in this rise is crude oil, which rose by a very similar amount to the street-price move,” Trilby Lundberg , the president of Lundberg Survey, said in a telephone interview yesterday. “From here, we will probably see very little increase, if any, with the big caveat of course being crude. […]