| Gender | Year | ||||||||||
| 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | ||
| Total | Patients | 133 | 154 | 199 | 257 | 288 | 321 | 477 | 776 | 1,033 | 1,227 |
| Deaths | 2 | 6 | 1 | 1 | 6 | 6 | 5 | 10 | 20 | 18 | |
| Rate | 30.1 | 76.1 | 9.2 | 6.8 | 37.8 | 36.3 | 24.3 | 26.0 | 34.7 | 24.5 | |
| Female | Patients | 67 | 73 | 94 | 115 | 131 | 141 | 208 | 344 | 444 | 513 |
| Deaths | 1 | 2 | 1 | 1 | 3 | 3 | 1 | 3 | 11 | 7 | |
| Rate | 30.8 | 49.9 | 19.9 | 15.2 | 40.8 | 42.6 | 11.2 | 17.8 | 44.7 | 22.5 | |
| Male | Patients | 66 | 81 | 105 | 142 | 157 | 180 | 269 | 432 | 589 | 714 |
| Deaths | 1 | 4 | - | - | 3 | 3 | 4 | 7 | 9 | 11 | |
| Rate | 29.5 | 103.2 | - | - | 35.2 | 31.7 | 34.4 | 32.4 | 27.3 | 26.1 | |