Why are some Americans smoking more?

A better job market and cheaper gasoline may be contributing factors in a monthslong increase to U.S. cigarette sales, according to Bloomberg Business.

Although sales volumes have generally declined over the last decade, 2015 may be the first year since 2002 the market posts an increase.

The nation’s second-largest tobacco seller Reynolds American Inc. posted a 12 percent gain during the first three quarters of 2015, while Marlboro maker Altria Group Inc. reported a 1.5 percent increase.

According to the Centers for Disease Control, states will spend roughly $490 million this year on antismoking programs. By comparison, the tobacco industry spent $9.6 billion on marketing in 2012, according to the Federal Trade Commission.

Read more from Bloomberg Business.