| Year | Total | Total w/Source | Individual | Alcohol/Drug Abuse Care Provider | Other Health Care Provider | School | Employer | Other Community Referral | Criminal Justice System |
| 2007 | 2,747 | 2,747 | 15.2% | 2.1% | 6.0% | 1.1% | 1.2% | 14.6% | 59.8% |
| 2006 | 2,330 | 2,327 | 16.7% | 3.0% | 5.5% | 1.1% | 1.2% | 13.2% | 59.3% |
| 2005 | 2,319 | 2,319 | 21.5% | 3.2% | 6.5% | 0.9% | 1.6% | 12.5% | 53.9% |
| 2004 | 2,042 | 2,042 | 16.1% | 3.6% | 6.7% | 0.9% | 1.3% | 15.8% | 55.5% |
| 2003 | 2,050 | 2,050 | 16.7% | 3.3% | 6.8% | 1.1% | 1.1% | 15.6% | 55.4% |
| 2002 | 2,061 | 2,061 | 15.5% | 5.1% | 6.5% | 1.3% | 1.6% | 12.8% | 57.3% |
| 2001 | 1,871 | 1,871 | 15.6% | 5.2% | 5.7% | 1.0% | 1.9% | 15.0% | 55.5% |
| 2000 | 1,920 | 1,920 | 13.2% | 4.7% | 5.6% | 1.5% | 2.1% | 16.9% | 56.1% |
| 1999 | 1,519 | 1,519 | 13.3% | 3.1% | 5.5% | 2.0% | 2.1% | 14.9% | 59.1% |
| 1998 | 1,701 | 1,701 | 15.9% | 2.8% | 6.6% | 2.1% | 2.4% | 15.0% | 55.3% |
| 1997 | 1,614 | 1,614 | 16.5% | 2.7% | 8.7% | 1.2% | 2.8% | 14.3% | 53.8% |
| 1996 | 1,278 | 1,278 | 18.2% | 2.0% | 7.9% | 2.0% | 2.9% | 17.1% | 50.0% |
| 1995 | 997 | 997 | 20.8% | 2.5% | 7.3% | 0.9% | 2.0% | 16.1% | 50.5% |
| 1994 | 917 | 917 | 20.1% | 2.9% | 8.9% | 1.3% | 1.6% | 14.9% | 50.2% |
| 1993 | 724 | 724 | 18.9% | 3.2% | 9.1% | 0.6% | 1.2% | 12.7% | 54.3% |
| 1992 | 495 | 495 | 19.8% | 2.0% | 10.7% | 0.6% | 1.4% | 10.5% | 55.0% |
Source: Treatment Episodes Data Set