Cigarette use among high school students in the past 30 days, by grade, 1975-2003 (line graph): 2003: 12th grade, 24.4%; 10th grade, 16.7%; 8th grade, 10.2%. The rate of cigarette use among 12th graders has decreased. Data for 8th and 10th grade are unavailable for years prior to 1991, and rates have fluctuated since that year but overall have not changed noticeably.

Source: Johnston LD, O’Malley PM, Bachman JG, Schulenberg JE (2004). Monitoring the Future national results on adolescent drug use: Overview of key findings, 2003. NIH Publication No. 04-5506). Bethesda, MD: National Institute on Drug Abuse.