| Year | Total | Total w/Source | Individual | Alcohol/Drug Abuse Care Provider | Other Health Care Provider | School | Employer | Other Community Referral | Criminal Justice System |
| 2007 | 10,309 | 10,309 | 11.5% | 15.3% | 1.8% | 4.0% | 0.7% | 15.3% | 51.4% |
| 2006 | 10,213 | 10,212 | 11.4% | 14.2% | 2.3% | 4.4% | 0.8% | 15.4% | 51.6% |
| 2005 | 11,000 | 10,995 | 11.0% | 14.8% | 2.3% | 4.2% | 0.8% | 16.2% | 50.8% |
| 2004 | 12,184 | 12,183 | 11.1% | 17.3% | 2.5% | 4.6% | 0.7% | 15.8% | 48.1% |
| 2003 | 9,212 | 9,201 | 11.4% | 17.6% | 1.9% | 4.5% | 0.9% | 15.4% | 48.3% |
| 2002 | 9,315 | 9,307 | 11.2% | 16.3% | 1.9% | 4.8% | 1.0% | 14.6% | 50.3% |
| 2001 | 9,597 | 9,594 | 11.9% | 16.1% | 2.4% | 6.4% | 0.9% | 12.8% | 49.5% |
| 2000 | 9,363 | 9,319 | 12.0% | 14.7% | 2.5% | 5.8% | 0.7% | 13.3% | 51.0% |
| 1999 | 7,808 | 7,768 | 13.5% | 15.3% | 2.8% | 6.2% | 1.0% | 13.7% | 47.5% |
| 1998 | 7,451 | 7,435 | 14.0% | 16.5% | 2.6% | 7.8% | 1.0% | 13.8% | 44.4% |
| 1997 | 8,199 | 8,192 | 14.1% | 16.9% | 2.6% | 8.5% | 1.2% | 14.0% | 42.5% |
| 1996 | 8,200 | 8,193 | 15.9% | 15.6% | 3.4% | 9.6% | 1.5% | 13.9% | 40.2% |
| 1995 | 7,359 | 7,356 | 16.2% | 15.5% | 4.1% | 8.8% | 1.6% | 15.5% | 38.4% |
| 1994 | 5,574 | 5,573 | 19.0% | 12.7% | 4.4% | 8.7% | 1.5% | 15.5% | 38.2% |
| 1993 | 3,988 | 3,987 | 21.3% | 7.1% | 4.4% | 7.3% | 1.7% | 15.7% | 42.6% |
| 1992 | 2,310 | 2,310 | 23.4% | 4.5% | 4.2% | 6.2% | 2.5% | 16.2% | 42.9% |
Source: Treatment Episodes Data Set