The U.S. average price for regular gasoline as of December 22, 2014, was $2.40 per gallon, down 15 cents from the previous week, and 87 cents lower than the same time last year.
This week’s average is the lowest since May 18, 2009.
Prices in all regions of the country declined, with the largest drop in the Rocky Mountains, where prices fell 20 cents to $2.38 per gallon.
The Midwest average fell 19 cents to $2.22 per gallon, while the Gulf Coast and West Coast prices fell 15 and 13 cents per gallon, to $2.18 and $2.70 per gallon, respectively. The East Coast price fell 11 cents to $2.52 per gallon.