| Year | Total | Total w/Source | Individual | Alcohol/Drug Abuse Care Provider | Other Health Care Provider | School | Employer | Other Community Referral | Criminal Justice System |
| 2007 | 10,614 | 10,614 | 6.2% | 6.9% | 0.5% | 3.6% | 0.9% | 19.2% | 62.6% |
| 2006 | 10,383 | 10,196 | 7.4% | 4.3% | 0.4% | 4.4% | 0.8% | 16.6% | 66.2% |
| 2005 | 10,121 | 9,831 | 9.0% | 1.7% | 0.4% | 4.7% | 1.2% | 15.5% | 67.4% |
| 2004 | 7,994 | 7,891 | 9.9% | 2.6% | 0.8% | 5.3% | 1.0% | 15.5% | 64.8% |
| 2003 | 7,482 | 7,392 | 11.8% | 3.3% | 1.0% | 5.9% | 0.7% | 11.4% | 66.0% |
| 2002 | 6,897 | 6,890 | 12.3% | 3.0% | 1.9% | 2.4% | 0.8% | 11.8% | 67.7% |
| 2001 | 6,016 | 6,015 | 13.2% | 4.0% | 2.0% | 3.0% | 1.0% | 14.6% | 62.2% |
| 2000 | 5,674 | 5,674 | 15.2% | 3.7% | 2.6% | 2.3% | 1.7% | 11.1% | 63.4% |
| 1999 | 6,437 | 6,437 | 13.7% | 3.2% | 3.7% | 2.3% | 1.4% | 11.1% | 64.6% |
| 1998 | 5,749 | 5,749 | 15.2% | 3.6% | 2.1% | 1.5% | 1.1% | 11.5% | 65.1% |
| 1997 | 3,698 | 3,698 | 17.6% | 4.8% | 2.7% | 1.8% | 1.4% | 9.7% | 62.1% |
| 1996 | 1,962 | 1,962 | 15.9% | 3.2% | 1.9% | 1.5% | 1.4% | 12.3% | 63.9% |
| 1995 | 6,307 | 6,209 | 11.6% | 6.5% | 0.2% | 2.5% | 1.0% | 3.7% | 74.4% |
| 1994 | 7,614 | 7,472 | 10.4% | 5.7% | 0.3% | 4.4% | 0.9% | 2.5% | 75.8% |
| 1993 | 6,076 | 5,539 | 13.4% | 5.7% | 0.2% | 2.7% | 1.5% | 4.0% | 72.5% |
| 1992 | 5,000 | 4,463 | 12.1% | 5.9% | 0.2% | 1.9% | 1.8% | 3.5% | 74.7% |
Source: Treatment Episodes Data Set