| Year | Total | Total w/Source | Individual | Alcohol/Drug Abuse Care Provider | Other Health Care Provider | School | Employer | Other Community Referral | Criminal Justice System |
| 2005 | 6,918 | 5,914 | 18.3% | 10.2% | 13.1% | 1.0% | 16.6% | 40.9% | |
| 2004 | 4,946 | 3,495 | 33.8% | 0.1% | 14.1% | 2.3% | 14.1% | 35.7% | |
| 2003 | 5,446 | 4,905 | 33.0% | 12.6% | 2.0% | 14.3% | 38.1% | ||
| 2002 | 4,750 | 4,126 | 33.7% | 0.0% | 11.8% | 1.5% | 13.0% | 40.0% | |
| 2001 | 4,762 | 4,182 | 33.6% | 0.0% | 10.2% | 1.9% | 12.7% | 41.5% | |
| 2000 | 3,822 | 3,358 | 36.3% | 10.1% | 1.5% | 10.1% | 42.1% | ||
| 1999 | 2,473 | 2,103 | 28.3% | 10.7% | 1.2% | 12.4% | 47.5% | ||
| 1998 | 2,162 | 1,800 | 28.7% | 11.2% | 1.1% | 8.0% | 51.1% | ||
| 1997 | 2,671 | 2,255 | 25.2% | 11.0% | 2.6% | 0.0% | 4.7% | 56.5% | |
| 1996 | 2,702 | 2,486 | 23.1% | 0.0% | 11.5% | 2.3% | 5.1% | 58.1% | |
| 1995 | 2,243 | 2,046 | 28.5% | 13.5% | 3.3% | 0.1% | 3.7% | 51.0% | |
| 1994 | 1,790 | 1,664 | 28.4% | 0.1% | 13.0% | 1.4% | 3.7% | 53.4% | |
| 1993 | 1,660 | 1,497 | 27.9% | 0.1% | 15.6% | 1.8% | 5.1% | 49.6% | |
| 1992 | 1,112 | 1,036 | 28.8% | 20.4% | 1.3% | 5.1% | 44.5% |
Source: Treatment Episodes Data Set