WASHINGTON, D.C. --- The U.S. average retail price for regular gasoline increased by 13.1 cents last week, rising to $2.914 per gallon as of April 24, the Energy Department reported. That's 67.8 cents higher than last year. Prices rose for the fourth week in a row, reaching their highest level since Oct. 3, 2005. Prices were up throughout the country, with the West Coast seeing the largest increase of 16.6 cents to reach $3.009 per gallon, the nation's highest regional price, reported the Energy Department's Energy Information Administration (EIA). California prices rose 17.2 cents to reach $3.068 per gallon. Prices on the East Coast gained 14.1 cents to hit $2.942 per gallon, while Midwest prices were up 11.5 cents to $2.870 per gallon. The Rocky Mountains had the lowest regional price, but increased 14.5 cents to reach $2.710 per gallon. Retail diesel fuel prices increased by 11.1 cents to reach $2.876 per gallon as of April 24, which is 58.7 cents higher than last year. Prices climbed throughout the country, with the Rocky Mountains seeing the largest regional increase of 14.7 cents to $2.903 per gallon. The Gulf Coast had the lowest regional price in the country, gaining 9.2 cents to $2.817 per gallon. West Coast prices were still the highest regional prices in the nation, adding another 14.5 cents to reach $3.026 per gallon. California prices were even higher, increasing 17 cents to reach $3.103 per gallon, the EIA reported.