Figure 1.
Current smoking by year of birth. Ten 5-year birth cohorts are shown, from 1920-24 to 1965-69
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.