OKLAHOMA CITY (AP) — AAA Oklahoma says gas prices in the state are the lowest in almost a month.

AAA says the average price for a gallon of regular gasoline on Monday was $2.12, the lowest since Dec. 29. Oklahoma and Indiana share the fifth lowest gas prices in the nation.

AAA spokesman Chuck Mai says Tulsa's average of $2.05 is the lowest it's been since two days before Christmas. Oklahoma City's average of $2.10 is the lowest since Dec. 28.

Meanwhile, the national average price of gas continues to decline as U.S. oil production increases. Monday's average of $2.31 per gallon is three cents less than a week ago. But retail averages are up by 46 cents compared to one year ago.

South Carolina has the nation's lowest price at $2.07 a gallon.