AUGUSTA — The cost of a gallon of gas in Maine has plummeted nearly nine cents in the past week.

Price-monitoring website reports Monday that the average retail price of a gallon a gas has dropped to $3.79. That’s still 12 cents above the national average.

Current prices in Maine are now nearly 16 cents per gallon lower than a month ago, yet remain more than 24 cents per gallon higher than at the same time last year.

A company analyst says there hasn’t been such a significant price drop in one week since May 2011.

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