A steady decline in gasoline prices continued, as the national average price of a gallon of unleaded declined 8.4 cents to $2.094 for the week ending Nov. 23, according to federal data.

Gasoline is now 72.7 cents lower than it was a year ago, and prices declined across the board in the regions tracking by the U.S. Energy Information Administration. The sharpest decline came in the Midwest where prices fell 15 cents to $1.935. The Gulf Coast now has the lowest average price at $1.854. California fuel prices continue to boost prices. The highest prices include the West Coast at $2.579 per gallon and $2.344 for the West Coast without California.

Among states, only three now average more than $2.50 per gallon, including Hawaii ($2.828), California ($2.73), and Nevada ($2.589). Eighteen other states now have gasoline below $2 per gallon. Indiana has replaced South Carolina with the nation's cheapest gas at $1.823.

Meanwhile, the price of diesel fell 3.7 cents to $2.445 for the week. Diesel now costs $1.183 less than a year ago.