| Year | Total | Total w/Source | Individual | Alcohol/Drug Abuse Care Provider | Other Health Care Provider | School | Employer | Other Community Referral | Criminal Justice System |
| 2007 | 5,394 | 5,394 | 15.5% | 8.2% | 2.0% | 2.4% | 1.6% | 8.3% | 62.1% |
| 2006 | 4,739 | 4,738 | 15.1% | 9.4% | 2.3% | 1.6% | 2.1% | 5.5% | 64.0% |
| 2005 | 5,498 | 5,496 | 14.4% | 10.6% | 2.4% | 1.5% | 2.2% | 4.4% | 64.6% |
| 2004 | 6,308 | 6,305 | 15.0% | 10.0% | 2.5% | 2.4% | 1.9% | 4.9% | 63.4% |
| 2003 | 5,772 | 5,770 | 14.5% | 10.2% | 2.2% | 2.5% | 2.2% | 12.6% | 55.7% |
| 2002 | 5,666 | 5,664 | 16.3% | 12.7% | 2.1% | 2.5% | 2.1% | 11.9% | 52.4% |
| 2001 | 6,099 | 6,098 | 17.6% | 15.4% | 2.6% | 2.9% | 2.1% | 3.5% | 55.9% |
| 2000 | 6,243 | 6,243 | 18.5% | 16.0% | 2.8% | 2.8% | 1.7% | 5.7% | 52.5% |
| 1999 | 3,257 | 3,257 | 14.9% | 8.8% | 2.5% | 2.8% | 2.3% | 5.2% | 63.6% |
| 1998 | 3,861 | 3,861 | 18.2% | 11.8% | 3.7% | 2.3% | 2.8% | 7.5% | 53.7% |
| 1997 | n/a | n/a | n/a | n/a | n/a | n/a | n/a | n/a | n/a |
| 1996 | 2,348 | 2,347 | 21.0% | 12.0% | 4.9% | 3.5% | 3.5% | 11.5% | 43.7% |
| 1995 | 2,493 | 2,493 | 20.7% | 12.8% | 6.2% | 2.5% | 3.7% | 8.4% | 45.9% |
| 1994 | 1,865 | 1,865 | 22.1% | 16.6% | 6.8% | 1.7% | 3.9% | 10.0% | 39.0% |
| 1993 | 1,574 | 1,573 | 23.8% | 17.2% | 6.3% | 1.1% | 4.5% | 10.7% | 36.5% |
| 1992 | 1,635 | 1,606 | 24.7% | 19.9% | 5.6% | 1.3% | 5.3% | 9.4% | 33.9% |
Source: Treatment Episodes Data Set