BOSTON (AP) — The average price of a gallon of gasoline in Massachusetts has soared by a dime in the past week, the fourth consecutive week of higher prices.

AAA Northeast reported Monday that self-serve, regular is now selling for an average of $1.96 per gallon.

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That’s 28 cents higher than a month ago, but still 8 cents lower than the national average.

The Massachusetts price a year ago was 36 cents per gallon higher.

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Prices are being driven up by higher crude oil prices, seasonal increases in demand, and reduced production due to refinery maintenance.

AAA found self-serve, regular selling for as low as $1.83 per gallon in Massachusetts, and as high as $2.29.

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