Fewer teens are using e-cigarettes and other types of tobacco, according to a new study by the Centers for Disease Control and Prevention (CDC).

The study found 11.3 percent of high school students used e-cigarettes in 2016, down from 16 percent the previous year, The Washington Post reports. This represents the first decline in e-cigarette use since the CDC began keeping track in 2011.

Only 8 percent of high school students said they smoked cigarettes last year, and 20 percent said they used any tobacco product, including cigarettes, e-cigarettes, cigars, hookahs, pipes and smokeless tobacco. Those numbers are the lowest on record, the CDC reported.

“While these latest numbers are encouraging, it is critical that we work to ensure this downward trend continues over the long term across all tobacco products,” Food and Drug Administration Commissioner Scott Gottlieb, M.D., said in a news release.