| Previous KI/KP Tx | Year | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | |
| Total | 55,832 | 60,404 | 64,681 | 69,129 | 74,150 | 79,376 | 84,754 | 89,543 | 91,441 |
| No | 49,364 | 53,393 | 57,178 | 61,214 | 65,621 | 70,216 | 74,994 | 79,255 | 80,965 |
| Yes | 6,468 | 7,011 | 7,503 | 7,915 | 8,529 | 9,160 | 9,760 | 10,288 | 10,476 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| No | 88.4% | 88.4% | 88.4% | 88.6% | 88.5% | 88.5% | 88.5% | 88.5% | 88.5% |
| Yes | 11.6% | 11.6% | 11.6% | 11.4% | 11.5% | 11.5% | 11.5% | 11.5% | 11.5% |