| Year | Age | Sex | Race | Placement status | Most serious offense |
|---|---|---|---|---|---|
| 1997 | 2.3% | 1.9% | 1.9% | 2.6% | 9.1% |
| 1999 | 67.5% | 1.3% | 67.6% | 1.2% | 80.9% |
| 2001 | 5.5% | 0.0% | 5.6% | 0.0% | 6.3% |
| 2003 | 0.7% | 0.7% | 0.7% | 13.2% | 2.3% |
| 2006 | 11.7% | 9.5% | 13.3% | 10.4% | 28.0% |
| 2007 | 27.2% | 26.7% | 27.5% | 27.0% | 34.7% |
| 2010 | 11.8% | 11.8% | 11.8% | 6.9% | 12.8% |
| 2011 | 11.1% | 11.1% | 11.1% | 11.7% | 12.0% |
| 2013 | 15.9% | 15.9% | 15.9% | 17.9% | 16.9% |
| 2015 | 6.1% | 6.1% | 6.1% | 7.5% | 6.6% |
| 2017 | 10.3% | 10.3% | 11.0% | 10.7% | 17.6% |