| Year | Total | Total w/Source | Individual | Alcohol/Drug Abuse Care Provider | Other Health Care Provider | School | Employer | Other Community Referral | Criminal Justice System |
| 2007 | 16,295 | 16,005 | 11.6% | 4.6% | 5.0% | 1.7% | 0.9% | 16.9% | 59.4% |
| 2006 | 14,048 | 14,044 | 13.6% | 5.3% | 5.1% | 2.0% | 0.9% | 17.2% | 55.9% |
| 2005 | 15,255 | 15,242 | 14.3% | 4.3% | 5.2% | 2.2% | 1.0% | 18.2% | 54.9% |
| 2004 | 11,218 | 11,217 | 15.7% | 4.7% | 4.9% | 2.4% | 0.9% | 15.9% | 55.4% |
| 2003 | 11,884 | 11,879 | 20.8% | 2.9% | 4.0% | 2.4% | 0.7% | 16.4% | 52.9% |
| 2002 | 14,120 | 14,114 | 29.3% | 4.4% | 3.1% | 2.3% | 1.3% | 12.5% | 47.2% |
| 2001 | 12,673 | 12,668 | 34.3% | 5.3% | 2.8% | 2.2% | 0.9% | 11.0% | 43.6% |
| 2000 | 9,820 | 9,817 | 35.0% | 3.8% | 3.3% | 2.3% | 0.9% | 12.3% | 42.4% |
| 1999 | 13,369 | 12,665 | 22.2% | 2.6% | 2.7% | 3.2% | 1.4% | 12.2% | 55.7% |
| 1998 | 17,804 | 17,115 | 12.3% | 3.2% | 3.6% | 3.8% | 1.7% | 13.6% | 62.0% |
| 1997 | 17,563 | 17,483 | 12.3% | 3.0% | 4.2% | 4.1% | 1.8% | 13.3% | 61.4% |
| 1996 | 15,196 | 15,126 | 11.5% | 3.4% | 3.8% | 4.6% | 1.9% | 14.2% | 60.6% |
| 1995 | 12,059 | 12,019 | 11.8% | 3.1% | 4.6% | 5.5% | 2.0% | 12.0% | 61.1% |
| 1994 | 8,179 | 8,158 | 13.0% | 3.5% | 4.5% | 4.8% | 2.2% | 11.0% | 61.0% |
| 1993 | 5,353 | 5,335 | 14.4% | 3.1% | 4.1% | 4.1% | 1.9% | 10.9% | 61.4% |
| 1992 | 4,080 | 4,074 | 16.5% | 3.0% | 4.7% | 3.0% | 3.1% | 10.6% | 59.2% |
Source: Treatment Episodes Data Set