The U.S. average retail price of regular gasoline increased 18 cents to $3.54 per gallon, up six cents from last year at this time. This is the largest one-week increase in the U.S. average gasoline price since February 2011. Prices increased in all regions of the nation for the second consecutive week. The largest increase came in the Midwest, where the price increased 22 cents to $3.51 per gallon. The West Coast price increased 19 cents to $3.74 per gallon, and the Gulf Coast price is up 17 cents to $3.33 per gallon. The Rocky Mountain price is $3.14 per gallon, an increase of 16 cents. Rounding out the regions, the East Coast price increased 14 cents to $3.59 per gallon.