In the state of South Dakota there was a total of 14,615 Substance Abuse Treatment Admissions during 2010.
This includes males and females from all age groups and all ethnicities. So if you think your alone in your pursuit for sobriety, you need to realize your in the company of many many others.

Here are some stats on the substances that were being used by these individuals.

Alcohol Abuse Only: 7,013
Alcohol and Drug Abuse: 4,306
Cocaine Abuse (Smoked): 42
Cocaine Abuse (Other Route): 54
Marijuana Abuse: 1,959
Heroin Abuse: 40
Other Opiate Abuse: 357
PCP Abuse: 1
Hallucinogen Abuse: 7
Amphetamine Abuse: 649
Other Stimulant Abuse: 3
Tranquilzer Abuse: 29
Sedative Abuse: 27
Inhalant Abuse: 42
Other / Unknown: 86

Reference: http://wwwdasis.samhsa.gov/webt/quicklink/SD10.htm