The cigarette smoking rate among U.S. adults dropped to another all-time low last year, with 1 in 11 adults saying they were current smokers, according to government survey data released this week.

Cigarette smoking is a risk factor for lung cancer, heart disease and stroke, and it’s long been considered the leading cause of preventable death.

The preliminary findings from the Centers for Disease Control and Prevention were based on survey responses from more than 24,200 adults. In the survey, CDC officials defined current cigarette smoking as smoking at least 100 cigarettes in a lifetime and now smoking every day or some days.

In the mid-1960s, 42% of U.S. adults were smokers. The rate has been gradually dropping for decades, due to cigarette taxes, tobacco product price hikes, smoking bans, public education campaigns and changes in the social acceptability of lighting up in public.

In 2024, the percentage of current adult smokers fell below 10% for the first time. Last year, it was 9%, according to the new survey.