BOSTON (AP) — The price of a gallon of gasoline in Massachusetts has fallen another 3 cents in the past week, and is now down 22 cents in the past seven weeks.

AAA Northeast announced Monday that self-serve, regular is selling for an average of $1.83 per gallon, a penny above the national average.

That price is 24 cents per gallon lower than a year ago.

The lowest crude oil prices in 13 years, strong supplies and lesser demand in the winter are all contributing to the low prices.

AAA found self-serve, regular selling for as low as $1.66 per gallon in Massachusetts and as high as $2.39.