In the state of Texas there was a total of 46,189 Substance Abuse Treatment Admissions during 2009.
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: 6,732
Alcohol and Drug Abuse: 5,896
Cocaine Abuse (Smoked): 4,808
Cocaine Abuse (Other Route): 3,096
Marijuana Abuse: 11,598
Heroin Abuse: 5,191
Other Opiate Abuse: 3,770
PCP Abuse: 235
Hallucinogen Abuse: 40
Amphetamine Abuse: 3,805
Other Stimulant Abuse: 0
Tranquilzer Abuse: 135
Sedative Abuse: 761
Inhalant Abuse: 57
Other / Unknown: 65

Reference: http://wwwdasis.samhsa.gov/webt/quicklink/TX09.htm