COLUMBIA, S.C. (AP/WVOC) - AAA Carolinas says South Carolina drivers have paid the least in the U.S. for gas for the second year in a row.

The travel organization says the average price for a gallon of gasoline in the state was $3.24 in 2013, 25 cents below the national average of $3.49 a gallon.

California had the highest gas prices in the continental U.S. at $3.89 a gallon.

AAA Carolinas says South Carolina also had the lowest gas prices in the country in 2012 at $3.35, an average of 11 cents more per gallon than last year.

Officials say a key reason for the trend is that our state also has one of the lowest gas taxes in the country.

It amounts to just under 17 cents a gallon, unchanged since 1987.