| Value | Category | Cases | |
|---|---|---|---|
| 2000 | 1 |
1.9%
|
|
| 2003 | 3 |
5.6%
|
|
| 2006 | 3 |
5.6%
|
|
| 2007 | 2 |
3.7%
|
|
| 2008 | 9 |
16.7%
|
|
| 2009 | 2 |
3.7%
|
|
| 2010 | 9 |
16.7%
|
|
| 2011 | 7 |
13%
|
|
| 2012 | 18 |
33.3%
|
|
| Sysmiss | 409 |