| Value | Category | Cases | |
|---|---|---|---|
| 2002 | 1 |
1.9%
|
|
| 2003 | 10 |
18.5%
|
|
| 2004 | 18 |
33.3%
|
|
| 2005 | 20 |
37%
|
|
| 2006 | 5 |
9.3%
|
|
| Sysmiss | 9102 |