AUGUSTA — Gas prices in Maine continue to tumble, down more than four cents in the past week.

Price-monitoring website reports that the average retail cost of a gallon of gas in Maine is now $3.69, four cents above the national average.

The current price is more than 12 cents per gallon lower than on the same day a year ago and more than 20 cents lower than a month ago.

The national average has decreased nearly 16 cents during the last month.