| Value | Category | Cases | |
|---|---|---|---|
| 1993 | 1 |
0.4%
|
|
| 1994 | 1 |
0.4%
|
|
| 1995 | 1 |
0.4%
|
|
| 1996 | 3 |
1.2%
|
|
| 1997 | 4 |
1.6%
|
|
| 1998 | 5 |
2%
|
|
| 1999 | 23 |
9.4%
|
|
| 2000 | 49 |
20%
|
|
| 2001 | 118 |
48.2%
|
|
| 2002 | 40 |
16.3%
|
|
| Sysmiss | 11070 |