| Value | Category | Cases | |
|---|---|---|---|
| 2005 | 3 |
2.7%
|
|
| 2007 | 3 |
2.7%
|
|
| 2008 | 2 |
1.8%
|
|
| 2009 | 3 |
2.7%
|
|
| 2010 | 16 |
14.5%
|
|
| 2011 | 8 |
7.3%
|
|
| 2012 | 12 |
10.9%
|
|
| 2013 | 22 |
20%
|
|
| 2014 | 18 |
16.4%
|
|
| 2015 | 18 |
16.4%
|
|
| 2016 | 5 |
4.5%
|
|
| Sysmiss | 229 |