| Value | Category | Cases | |
|---|---|---|---|
| 2002 | 249 |
25.2%
|
|
| 2003 | 23 |
2.3%
|
|
| 2004 | 81 |
8.2%
|
|
| 2005 | 637 |
64.3%
|
|
| Sysmiss | 9 |