| Previous KI/KP Tx | Year | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | |
| Total | 36,951 | 39,958 | 42,219 | 44,262 | 45,475 | 45,290 | 46,106 | 47,039 | 48,677 | 50,624 |
| No | 29,805 | 32,594 | 34,519 | 36,090 | 37,317 | 37,357 | 38,165 | 39,058 | 40,477 | 42,072 |
| Yes | 7,146 | 7,364 | 7,700 | 8,172 | 8,158 | 7,933 | 7,941 | 7,981 | 8,200 | 8,552 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| No | 80.7% | 81.6% | 81.8% | 81.5% | 82.1% | 82.5% | 82.8% | 83.0% | 83.2% | 83.1% |
| Yes | 19.3% | 18.4% | 18.2% | 18.5% | 17.9% | 17.5% | 17.2% | 17.0% | 16.8% | 16.9% |