| Year | Total | Total w/Source | Individual | Alcohol/Drug Abuse Care Provider | Other Health Care Provider | School | Employer | Other Community Referral | Criminal Justice System |
| 2007 | 1,783 | 1,761 | 37.1% | 1.2% | 4.7% | 28.0% | 0.9% | 6.4% | 21.8% |
| 2006 | 1,618 | 1,580 | 36.9% | 1.1% | 6.0% | 27.2% | 0.8% | 4.9% | 23.2% |
| 2005 | 1,577 | 1,542 | 38.1% | 1.0% | 3.6% | 30.0% | 1.6% | 4.2% | 21.4% |
| 2004 | 1,215 | 1,196 | 32.0% | 1.3% | 6.3% | 22.1% | 1.4% | 8.9% | 28.1% |
| 2003 | 1,391 | 1,375 | 34.7% | 1.7% | 4.5% | 22.8% | 1.3% | 7.3% | 27.8% |
| 2002 | 1,432 | 1,395 | 35.9% | 1.5% | 5.9% | 19.9% | 1.2% | 7.3% | 28.2% |
| 2001 | 1,429 | 1,412 | 35.5% | 1.1% | 6.5% | 20.5% | 1.2% | 6.7% | 28.5% |
| 2000 | 1,344 | 1,329 | 36.0% | 1.3% | 6.4% | 21.2% | 1.1% | 7.3% | 26.7% |
| 1999 | 1,258 | 1,249 | 35.3% | 1.5% | 5.9% | 24.8% | 1.0% | 6.7% | 24.8% |
| 1998 | 1,244 | 1,229 | 38.9% | 1.3% | 6.8% | 30.4% | 1.0% | 4.2% | 17.4% |
| 1997 | 1,117 | 1,098 | 41.1% | 2.5% | 4.2% | 24.2% | 0.6% | 6.3% | 21.2% |
| 1996 | 1,013 | 990 | 36.2% | 2.4% | 5.2% | 24.9% | 2.0% | 7.2% | 22.2% |
| 1995 | 746 | 743 | 38.9% | 3.1% | 3.4% | 18.0% | 7.0% | 5.9% | 23.7% |
| 1994 | 591 | 589 | 37.4% | 2.6% | 3.7% | 20.7% | 2.7% | 7.1% | 25.8% |
| 1993 | 654 | 654 | 36.4% | 1.8% | 3.1% | 24.5% | 1.2% | 6.9% | 26.2% |
| 1992 | 511 | 508 | 33.3% | 2.4% | 3.9% | 28.7% | 0.4% | 5.1% | 26.2% |
Source: Treatment Episodes Data Set