| Value | Category | Cases | |
|---|---|---|---|
| 2000 | 7 |
0.5%
|
|
| 2001 | 16 |
1.2%
|
|
| 2002 | 102 |
7.7%
|
|
| 2003 | 264 |
20%
|
|
| 2004 | 206 |
15.6%
|
|
| 2005 | 226 |
17.1%
|
|
| 2006 | 267 |
20.2%
|
|
| 2007 | 232 |
17.6%
|
|
| Sysmiss | 2379 |