| Year | Total | Total w/Source | Individual | Alcohol/Drug Abuse Care Provider | Other Health Care Provider | School | Employer | Other Community Referral | Criminal Justice System |
| 2007 | 1,259 | 938 | 9.1% | 26.8% | 1.8% | 0.8% | 0.1% | 2.6% | 59.0% |
| 2006 | 1,367 | 1,157 | 8.0% | 24.6% | 3.0% | 0.4% | 0.1% | 3.5% | 60.4% |
| 2005 | 357 | 346 | 6.4% | 15.3% | 2.0% | 1.5% | 0.3% | 31.8% | 42.8% |
| 2004 | 1,383 | 1,283 | 8.2% | 8.2% | 1.0% | 0.9% | 0.2% | 10.4% | 71.2% |
| 2003 | 724 | 565 | 11.3% | 1.4% | 3.5% | 3.0% | 0.9% | 7.3% | 72.6% |
| 2002 | 1,130 | 962 | 11.5% | 11.2% | 3.5% | 3.2% | 0.8% | 7.4% | 62.3% |
| 2001 | 1,912 | 1,861 | 12.0% | 11.7% | 5.2% | 3.5% | 0.2% | 7.9% | 59.6% |
| 2000 | 1,339 | 1,286 | 9.8% | 9.7% | 4.5% | 2.2% | 0.2% | 8.8% | 64.9% |
| 1999 | 2,035 | 1,959 | 11.2% | 4.2% | 3.2% | 4.0% | 0.2% | 5.4% | 71.9% |
| 1998 | 1,920 | 1,803 | 7.7% | 1.8% | 4.7% | 4.8% | 0.6% | 7.8% | 72.7% |
| 1997 | 1,441 | 1,339 | 10.2% | 2.4% | 4.2% | 6.9% | 0.5% | 7.2% | 68.6% |
| 1996 | 1,552 | 1,480 | 13.7% | 3.0% | 3.5% | 8.4% | 1.0% | 6.5% | 64.1% |
| 1995 | 1,314 | 1,229 | 17.3% | 1.7% | 3.9% | 11.6% | 0.6% | 10.3% | 54.7% |
| 1994 | 684 | 626 | 22.4% | 1.4% | 1.3% | 9.4% | 1.0% | 12.1% | 52.4% |
| 1993 | 646 | 586 | 20.0% | 2.6% | 2.4% | 11.6% | 0.7% | 12.8% | 50.0% |
| 1992 | 374 | 346 | 17.6% | 4.6% | 3.5% | 6.4% | 0.6% | 14.2% | 53.2% |
Source: Treatment Episodes Data Set