| Year | Total | Total w/Source | Individual | Alcohol/Drug Abuse Care Provider | Other Health Care Provider | School | Employer | Other Community Referral | Criminal Justice System |
| 2007 | 5,762 | 5,382 | 18.3% | 1.4% | 4.3% | 6.8% | 0.6% | 7.9% | 60.8% |
| 2006 | 6,197 | 5,824 | 19.3% | 1.5% | 4.6% | 7.7% | 0.7% | 6.8% | 59.5% |
| 2005 | 6,205 | 5,789 | 20.8% | 2.3% | 5.3% | 7.8% | 0.6% | 7.6% | 55.6% |
| 2004 | 9,467 | 8,794 | 20.2% | 2.0% | 4.3% | 7.8% | 0.8% | 8.5% | 56.6% |
| 2003 | 8,327 | 7,934 | 20.3% | 1.8% | 4.8% | 8.8% | 0.6% | 9.7% | 54.0% |
| 2002 | 5,478 | 5,275 | 18.4% | 0.9% | 4.5% | 8.5% | 0.9% | 12.1% | 54.7% |
| 2001 | 3,950 | 3,837 | 19.8% | 0.6% | 3.4% | 4.3% | 0.8% | 12.5% | 58.5% |
| 2000 | 3,365 | 3,232 | 19.8% | 0.9% | 3.9% | 4.5% | 0.7% | 14.0% | 56.3% |
| 1999 | 2,718 | 2,620 | 21.6% | 1.1% | 3.4% | 4.2% | 0.7% | 13.4% | 55.7% |
| 1998 | 1,469 | 1,425 | 20.4% | 0.8% | 3.9% | 4.8% | 1.1% | 12.6% | 56.5% |
| 1997 | 1,621 | 1,574 | 23.1% | 0.7% | 4.2% | 5.2% | 1.8% | 10.7% | 54.2% |
| 1996 | 2,590 | 2,463 | 25.3% | 0.4% | 8.4% | 4.1% | 1.8% | 8.4% | 51.6% |
| 1995 | 3,970 | 3,831 | 26.4% | 0.7% | 10.1% | 3.6% | 2.2% | 6.0% | 51.1% |
| 1994 | 3,260 | 3,193 | 30.7% | 0.7% | 8.4% | 3.6% | 2.3% | 6.0% | 48.4% |
| 1993 | 2,491 | 2,424 | 35.3% | 0.8% | 6.2% | 3.2% | 2.1% | 11.3% | 41.1% |
| 1992 | 1,882 | 1,809 | 27.4% | 3.1% | 7.1% | 2.9% | 3.4% | 13.5% | 42.5% |
Source: Treatment Episodes Data Set