Gasoline prices in Massachusetts have now fallen each week for the past three months.

AAA Southern New England said Monday that its weekly survey of gas stations in the Bay State found self-serve regular selling for an average of $2.78 cents per gallon. That's seven cents lower than a week ago and 18 cents below the average price one month ago.

Mary Maguire, a spokeswoman for AAA, called the latest drop in prices a ``holiday gift to consumers.''

A year ago at this time, the average price in Massachusetts was 63 cents higher at $3.41 per gallon.

The current national average for self-serve regular is $2.67 per gallon.

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