| Year | Age | Sex | Race | Placement status | Most serious offense |
|---|---|---|---|---|---|
| 1997 | 12.3% | 10.1% | 12.4% | 4.4% | 20.5% |
| 1999 | 1.7% | 1.5% | 4.5% | 5.5% | 8.7% |
| 2001 | 3.3% | 3.1% | 3.8% | 3.1% | 7.3% |
| 2003 | 10.7% | 7.5% | 12.1% | 11.7% | 10.7% |
| 2006 | 8.5% | 4.9% | 8.5% | 5.4% | 9.9% |
| 2007 | 16.3% | 9.2% | 16.1% | 11.1% | 17.0% |
| 2010 | 7.0% | 3.6% | 6.0% | 5.1% | 8.7% |
| 2011 | 2.2% | 0.0% | 0.7% | 2.5% | 1.9% |
| 2013 | 2.3% | 1.4% | 2.0% | 2.9% | 2.6% |
| 2015 | 8.5% | 3.9% | 4.9% | 8.9% | 11.2% |
| 2017 | 23.2% | 11.1% | 12.8% | 15.5% | 13.7% |