| Year | Total | Total w/Source | Individual | Alcohol/Drug Abuse Care Provider | Other Health Care Provider | School | Employer | Other Community Referral | Criminal Justice System |
| 2007 | 10,856 | 10,852 | 18.2% | 19.2% | 1.6% | 1.2% | 0.5% | 8.2% | 51.3% |
| 2006 | 10,987 | 10,981 | 19.6% | 17.3% | 1.7% | 1.3% | 0.5% | 6.8% | 52.9% |
| 2005 | 10,036 | 9,837 | 17.6% | 18.4% | 1.9% | 1.5% | 0.6% | 7.0% | 53.0% |
| 2004 | 10,381 | 10,291 | 17.0% | 22.1% | 1.9% | 1.6% | 0.5% | 6.7% | 50.3% |
| 2003 | 9,707 | 9,702 | 18.2% | 23.7% | 2.2% | 1.6% | 0.5% | 6.3% | 47.5% |
| 2002 | 10,433 | 10,425 | 17.3% | 23.1% | 2.1% | 1.5% | 0.9% | 6.5% | 48.7% |
| 2001 | 7,759 | 7,748 | 15.3% | 29.1% | 1.7% | 2.4% | 1.3% | 5.9% | 44.4% |
| 2000 | 9,213 | 9,169 | 9.6% | 38.1% | 1.6% | 2.1% | 1.8% | 6.1% | 40.8% |
| 1999 | 9,161 | 9,023 | 10.8% | 27.1% | 1.5% | 3.4% | 1.9% | 7.8% | 47.5% |
| 1998 | 13,703 | 13,591 | 13.2% | 20.2% | 2.6% | 2.8% | 2.3% | 8.1% | 50.8% |
| 1997 | 12,972 | 12,875 | 13.7% | 20.8% | 2.6% | 3.4% | 2.2% | 8.1% | 49.2% |
| 1996 | 12,647 | 12,545 | 14.9% | 21.3% | 2.8% | 3.5% | 2.5% | 8.4% | 46.6% |
| 1995 | 10,757 | 10,718 | 16.5% | 19.8% | 3.4% | 4.2% | 2.7% | 8.8% | 44.7% |
| 1994 | 7,884 | 7,783 | 17.9% | 21.6% | 4.0% | 4.4% | 2.0% | 9.5% | 40.6% |
| 1993 | 6,087 | 5,901 | 19.4% | 23.1% | 5.1% | 2.4% | 1.9% | 8.6% | 39.7% |
| 1992 | 4,848 | 4,744 | 22.4% | 19.7% | 5.3% | 2.5% | 2.3% | 8.7% | 39.1% |
Source: Treatment Episodes Data Set