| Year | Total | Total w/Source | Individual | Alcohol/Drug Abuse Care Provider | Other Health Care Provider | School | Employer | Other Community Referral | Criminal Justice System |
| 2007 | 3,048 | 2,803 | 37.6% | 10.6% | 1.5% | 12.9% | 37.3% | ||
| 2006 | 1,829 | 1,679 | 27.6% | 5.1% | 2.0% | 0.1% | 14.1% | 51.2% | |
| 2005 | 2,003 | 1,830 | 29.4% | 4.3% | 1.9% | 15.0% | 49.5% | ||
| 2004 | 2,691 | 2,575 | 48.7% | 7.8% | 0.9% | 13.0% | 29.7% | ||
| 2003 | 1,014 | 972 | 38.0% | 19.3% | 0.1% | 2.9% | 39.7% | ||
| 2002 | 1,006 | 948 | 25.3% | 4.1% | 0.2% | 4.1% | 66.2% | ||
| 2001 | 1,003 | 957 | 24.7% | 5.8% | 0.5% | 1.3% | 4.1% | 63.7% | |
| 2000 | 790 | 745 | 25.9% | 3.8% | 0.5% | 0.7% | 3.9% | 65.2% | |
| 1999 | 757 | 706 | 30.6% | 3.3% | 0.3% | 0.6% | 2.4% | 62.9% | |
| 1998 | 634 | 588 | 40.1% | 13.8% | 1.7% | 5.6% | 1.2% | 37.6% |
Source: Treatment Episodes Data Set