Results from the 2007 National Survey on Drug Use and Health: National Findings
http://www.oas.samhsa.gov/nsduh/2k7nsduh/2k7Results.pdf
Provides results from a survey of 67,500 persons, the primary annual source of information on the use of illicit drugs, alcohol, and tobacco by Americans 12 years or older. Estimates that 19.9 million Americans or 8% of the population were users of illicit drugs during 2007. Presents characteristics of users by drug of choice. Also covers prevention methods and treatment. From the Substance Abuse and Mental Health Services Administration
