| Year | Total | Total w/Source | Individual | Alcohol/Drug Abuse Care Provider | Other Health Care Provider | School | Employer | Other Community Referral | Criminal Justice System |
| 2007 | 1,432 | 1,385 | 28.7% | 5.2% | 16.3% | 3.6% | 0.1% | 5.5% | 40.7% |
| 2006 | 1,335 | 1,274 | 26.3% | 6.4% | 15.5% | 2.9% | 0.6% | 5.0% | 43.3% |
| 2005 | 1,471 | 1,425 | 22.6% | 6.7% | 17.5% | 3.4% | 1.1% | 4.6% | 44.1% |
| 2004 | 1,758 | 1,754 | 21.6% | 4.2% | 19.4% | 3.5% | 1.3% | 4.5% | 45.6% |
| 2003 | 1,715 | 1,712 | 25.4% | 4.5% | 17.3% | 3.6% | 1.8% | 4.5% | 42.9% |
| 2002 | 1,784 | 1,784 | 24.9% | 6.3% | 16.4% | 2.6% | 1.9% | 4.7% | 43.2% |
| 2001 | 1,473 | 1,473 | 24.9% | 7.7% | 14.1% | 2.6% | 1.8% | 5.4% | 43.6% |
| 2000 | 1,330 | 1,330 | 21.7% | 7.0% | 17.4% | 3.5% | 1.9% | 6.4% | 42.2% |
| 1999 | 1,185 | 1,185 | 21.4% | 7.8% | 16.0% | 4.1% | 1.4% | 5.7% | 43.7% |
| 1998 | 1,222 | 1,220 | 26.2% | 11.0% | 17.0% | 2.9% | 2.5% | 6.3% | 34.2% |
| 1997 | 1,131 | 1,131 | 29.5% | 11.2% | 16.2% | 3.8% | 1.4% | 5.4% | 32.5% |
| 1996 | 1,084 | 1,083 | 28.3% | 13.9% | 15.7% | 3.2% | 0.5% | 7.0% | 31.4% |
| 1995 | 844 | 831 | 30.1% | 12.0% | 8.7% | 2.8% | 1.1% | 8.9% | 36.5% |
| 1994 | 782 | 772 | 26.4% | 15.4% | 6.5% | 3.9% | 0.5% | 8.2% | 39.1% |
| 1993 | 764 | 749 | 25.2% | 17.2% | 7.1% | 3.2% | 0.9% | 5.6% | 40.7% |
| 1992 | 737 | 722 | 31.3% | 14.1% | 4.7% | 2.6% | 1.1% | 6.2% | 39.9% |
Source: Treatment Episodes Data Set