| Value | Category | Cases | |
|---|---|---|---|
| 1995 | 1 |
1.3%
|
|
| 1996 | 1 |
1.3%
|
|
| 1997 | 2 |
2.7%
|
|
| 1998 | 9 |
12%
|
|
| 1999 | 9 |
12%
|
|
| 2000 | 26 |
34.7%
|
|
| 2001 | 11 |
14.7%
|
|
| 2002 | 11 |
14.7%
|
|
| 2003 | 5 |
6.7%
|
|
| Sysmiss | 2080 |