| Value | Category | Cases | |
|---|---|---|---|
| 1996 | 1 |
2.9%
|
|
| 1997 | 2 |
5.7%
|
|
| 1998 | 5 |
14.3%
|
|
| 1999 | 12 |
34.3%
|
|
| 2000 | 14 |
40%
|
|
| 9998 | 1 |
2.9%
|