| Value | Category | Cases | |
|---|---|---|---|
| 1998 | 1 |
9.1%
|
|
| 1999 | 7 |
63.6%
|
|
| 2000 | 2 |
18.2%
|
|
| 2001 | 1 |
9.1%
|
|
| Sysmiss | 11447 |