| Value | Category | Cases | |
|---|---|---|---|
| 2000 | 10 |
5.9%
|
|
| 2001 | 11 |
6.5%
|
|
| 2002 | 38 |
22.5%
|
|
| 2003 | 48 |
28.4%
|
|
| 2004 | 30 |
17.8%
|
|
| 2005 | 24 |
14.2%
|
|
| 2006 | 8 |
4.7%
|
|
| Sysmiss | 15 |