NEW YORK (MarketWatch)—Here’s your share of this year’s fall in gasoline prices: $43.75.

The slide in gas prices saved Americans an estimated $14 billion in 2014 versus their 2013 gasoline tab, according to the automobile and travel group AAA.

Given that 320 million people live in the U.S., that’s $43.75 for every man, woman and child, or about $115 per household.

Most of the savings came in the final months of the year, after a rise in prices in early 2014, AAA said. That means the savings have been particularly pronounced in the run-up to Christmas. “Many drivers are saving $15-$30 every time they go to the gas station compared with a year ago,” AAA said in a statement.

The average price peaked on April 28, at $3.70 a gallon, and has slid 39% to the year’s low of $2.26 a gallon on Wednesday, also the lowest price since May 12, 2009, AAA said. The year’s average was $3.34 a gallon, down from $3.49 in 2013.

The savings could be even bigger in 2015 if oil prices stay relatively low, AAA said. It put the number at $50 billion to $75 billion, or as much as $234 per person.

Prices at the pump have now fallen for a record 97 straight days, AAA added. The average price per gallon is below $2 in four states: Missouri, Oklahoma, Ohio and Indiana. AAA said prices nationwide could fall another 10 cents per gallon over the next two weeks, even if oil prices stabilize, as gas prices catch up with the drop in crude. That could put another seven states under $2.

Should oil prices stabilize, gas prices could begin rising within a month as the maintenance season for refineries begins, reducing supply, AAA added. Gas prices typically rise by about 30 cents to 50 cents a gallon during the spring maintenance season.

Oil prices plunged 46% during 2014 amid a glut in supply. Crude for February delivery CLG25, settled at $53.27 a barrel, the lowest settlement for a front-month contract since May 1, 2009.

The drop in prices at the pump has been credited with boosting consumer confidence, leading to a jump in retail sales during November and the strongest third-quarter economic growth since 2003.