In the state of Washington there was a total of 38,086 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: 4,869
Alcohol and Drug Abuse: 10,960
Cocaine Abuse (Smoked): 1,233
Cocaine Abuse (Other Route): 377
Marijuana Abuse: 8,544
Heroin Abuse: 3,584
Other Opiate Abuse: 3,102
PCP Abuse: 29
Hallucinogen Abuse: 126
Amphetamine Abuse: 4,711
Other Stimulant Abuse: 0
Tranquilzer Abuse: 159
Sedative Abuse: 42
Inhalant Abuse: 27
Other / Unknown: 323

Reference: http://wwwdasis.samhsa.gov/webt/quicklink/WA10.htm