| Previous PA/KP Tx | Year | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | |
| Total | 123 | 192 | 260 | 285 | 300 | 264 | 208 | 241 | 241 | 209 |
| No | 114 | 174 | 235 | 267 | 273 | 231 | 179 | 203 | 191 | 170 |
| Yes | 9 | 18 | 25 | 18 | 27 | 33 | 29 | 38 | 50 | 39 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| No | 92.7% | 90.6% | 90.4% | 93.7% | 91.0% | 87.5% | 86.1% | 84.2% | 79.3% | 81.3% |
| Yes | 7.3% | 9.4% | 9.6% | 6.3% | 9.0% | 12.5% | 13.9% | 15.8% | 20.7% | 18.7% |