Gas prices keep dropping across northern New England.

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Among the three states, the price-tracking website GasBuddy.com says gasoline prices are lowest in New Hampshire, where the average price fell 1.4 cents per gallon last week to $1.97. In Vermont, the average price is $2.14 per gallon, and in Maine, it's $2.07.

The national average is $1.99. The national average has dropped 5 cents per gallon in the last month and is nearly 20 cents per gallon lower than the price a year ago.