| Value | Category | Cases | |
|---|---|---|---|
| 2005 | 3 |
3.9%
|
|
| 2007 | 1 |
1.3%
|
|
| 2008 | 3 |
3.9%
|
|
| 2009 | 2 |
2.6%
|
|
| 2010 | 12 |
15.6%
|
|
| 2011 | 8 |
10.4%
|
|
| 2012 | 9 |
11.7%
|
|
| 2013 | 16 |
20.8%
|
|
| 2014 | 10 |
13%
|
|
| 2015 | 11 |
14.3%
|
|
| 2016 | 2 |
2.6%
|
|
| Sysmiss | 262 |