| Year | Age | Sex | Race | Placement status | Most serious offense |
|---|---|---|---|---|---|
| 1997 | 4.9% | 4.0% | 6.1% | 4.5% | 6.5% |
| 1999 | 3.3% | 2.2% | 3.4% | 4.3% | 6.4% |
| 2001 | 21.6% | 9.9% | 21.4% | 1.9% | 24.4% |
| 2003 | 4.3% | 2.1% | 4.5% | 2.7% | 11.6% |
| 2006 | 24.5% | 14.9% | 25.4% | 1.0% | 25.1% |
| 2007 | 9.3% | 5.2% | 9.3% | 2.7% | 22.2% |
| 2010 | 0.9% | 0.0% | 0.9% | 4.9% | 7.5% |
| 2011 | 2.7% | 2.7% | 3.5% | 10.2% | 4.1% |
| 2013 | 0.2% | 0.0% | 0.2% | 7.0% | 6.3% |
| 2015 | 4.3% | 13.5% | 4.1% | 4.1% | 13.5% |
| 2017 | 3.6% | 3.6% | 9.3% | 10.4% | 9.3% |