An industry survey shows the national average price of gasoline has changed little over the past five months, the Associated Press reported Sept. 15. Factoring in all grades and prices, analyst Trilby Lundberg told AP, the average price is about $1.45 a gallon, down only one cent per gallon from early April. This year's consistency is in contrast to the picture in 2001, when the price climbed from $1.54 a gallon in early April to $1.76 in mid-May before falling to $1.51 in late August. Lundberg, who surveys 8,000 service stations nationwide, told AP the flat prices are due to stability in crude oil prices and consistent production at U.S. refineries.