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. 2019 Feb 12;7:e6356. doi: 10.7717/peerj.6356

Figure 2. Estimated annual incidence (%) of tobacco cigarette smoking in the United States among 12–23 year olds from 1979 to 2015.

Figure 2

Data from the United States NSDUH, 1979–2015 (n = 429,348). (A) 12–14 year olds. (B) 15–17 year olds. (C) 17–19 year olds. (D) 20–23 year olds.