In the state of Indiana there was a total of 24,054 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: 4,064
Alcohol and Drug Abuse: 4,931
Cocaine Abuse (Smoked): 1,147
Cocaine Abuse (Other Route): 317
Marijuana Abuse: 5,121
Heroin Abuse: 1,276
Other Opiate Abuse: 2,183
PCP Abuse: 12
Hallucinogen Abuse: 14
Amphetamine Abuse: 1,176
Other Stimulant Abuse: 7
Tranquilzer Abuse: 296
Sedative Abuse: 56
Inhalant Abuse: 20
Other / Unknown: 3,434

Reference: http://wwwdasis.samhsa.gov/webt/quicklink/IN10.htm