| Value | Category | Cases | |
|---|---|---|---|
| 2005 | 3 |
10.7%
|
|
| 2006 | 1 |
3.6%
|
|
| 2009 | 4 |
14.3%
|
|
| 2010 | 3 |
10.7%
|
|
| 2011 | 1 |
3.6%
|
|
| 2012 | 3 |
10.7%
|
|
| 2013 | 3 |
10.7%
|
|
| 2014 | 4 |
14.3%
|
|
| 2015 | 6 |
21.4%
|
|
| Sysmiss | 2536 |