| Region 2 | |||||||||
| Adult Tertiary Drug of Abuse | |||||||||
| Source: IDHW Client Information System | |||||||||
| 1999-2000 | 2000-2001 | 2001-2002 | 2002-2003 | 2004-2005 | 2005-2006 | 2006-2007 | 2007-2008 | ||
| Alcohol | 25 | 36 | 41 | 38 | 104 | 28 | 31 | 39 | |
| Methamphetamines | 24 | 25 | 21 | 33 | 40 | 21 | 21 | 23 | |
| Marijuana | 25 | 27 | 19 | 23 | 64 | 17 | 30 | 33 | |
| Cocaine | 14 | 14 | 15 | 15 | 20 | 8 | 15 | 11 | |
| Heroin | 7 | 3 | 1 | 1 | 7 | 2 | 0 | 3 | |
| Other Compounds | 1999-2000 | 2000-2001 | 2001-2002 | 2002-2003 | 2004-2005 | 2005-2006 | 2006-2007 | 2007-2008 | |
| Non-Rx Methadone | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 3 | |
| Other Opiates/Synth | 2 | 1 | 5 | 4 | 14 | 9 | 8 | 14 | |
| PCP | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Hallucinogens | 5 | 6 | 1 | 3 | 8 | 4 | 5 | 2 | |
| Other Amphetamines | 0 | 3 | 2 | 0 | 1 | 0 | 1 | 1 | |
| Other Inhalants | 1 | 1 | 0 | 0 | |||||
| Benzodiazpine | 1 | 1 | 1 | 1 | 2 | 2 | 1 | 1 | |
| Other Tranquilizers | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | |
| Barbituates | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | |
| Other Sedatives | 0 | 0 | 1 | 2 | 0 | 0 | 0 | 0 | |
| Inhalants | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Over-the-Counter | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Other | 1 | 1 | 0 | 1 | 2 | 7 | 4 | 1 | |
| None | 276 | 283 | 279 | 326 | 487 | 542 | 465 | 293 | |