| Year | Total | Total w/Source | Individual | Alcohol/Drug Abuse Care Provider | Other Health Care Provider | School | Employer | Other Community Referral | Criminal Justice System |
| 2007 | 1,692 | 1,692 | 13.4% | 3.9% | 4.7% | 0.9% | 1.2% | 17.9% | 58.1% |
| 2006 | 1,635 | 1,634 | 13.9% | 3.5% | 4.4% | 1.5% | 1.1% | 23.0% | 52.7% |
| 2005 | 1,748 | 1,748 | 13.3% | 3.4% | 4.8% | 1.7% | 1.4% | 16.8% | 58.6% |
| 2004 | 1,740 | 1,740 | 13.2% | 2.5% | 5.1% | 1.6% | 1.6% | 18.9% | 57.2% |
| 2003 | 1,934 | 1,933 | 13.7% | 3.6% | 4.9% | 1.2% | 2.5% | 16.0% | 58.2% |
| 2002 | 1,770 | 1,770 | 12.9% | 3.5% | 4.6% | 2.4% | 1.9% | 17.0% | 57.6% |
| 2001 | 1,639 | 1,639 | 13.6% | 4.3% | 5.6% | 2.1% | 1.5% | 15.9% | 57.1% |
| 2000 | 1,400 | 1,400 | 17.2% | 3.6% | 4.1% | 1.9% | 1.1% | 17.7% | 54.4% |
| 1999 | 1,233 | 1,233 | 17.7% | 2.7% | 4.3% | 3.2% | 1.5% | 17.4% | 53.3% |
| 1998 | 1,004 | 1,004 | 17.1% | 3.5% | 6.4% | 2.9% | 1.9% | 19.7% | 48.5% |
| 1997 | 822 | 818 | 17.5% | 2.4% | 7.8% | 3.3% | 1.3% | 18.3% | 49.3% |
| 1996 | 1,006 | 1,003 | 19.1% | 3.5% | 9.6% | 3.2% | 1.8% | 18.4% | 44.4% |
| 1995 | 762 | 762 | 23.8% | 2.2% | 7.0% | 6.0% | 0.9% | 16.1% | 44.0% |
| 1994 | 885 | 884 | 26.8% | 2.4% | 3.9% | 6.3% | 1.5% | 13.1% | 46.0% |
| 1993 | 801 | 801 | 29.3% | 3.8% | 6.1% | 7.6% | 1.0% | 13.6% | 38.6% |
| 1992 | 682 | 682 | 34.9% | 4.1% | 6.0% | 6.9% | 2.2% | 13.2% | 32.7% |
Source: Treatment Episodes Data Set