In 2001, 12-14 year olds were more likely to report having seen smoking on TV and movies than were 18-24 year olds.
"Preventing Tobacco Use Among Youth and Young Adults: A Report of the Surgeon General, 2012." U.S. Department of Health and Human Services, CDC, Public Health Service, Office of the Surgeon General. 2012. Report.http://www.surgeongeneral.gov/library/reports/preventing-youth-tobacco-use/