| Value | Category | Cases | |
|---|---|---|---|
| 2007 | 2 |
3.3%
|
|
| 2009 | 10 |
16.7%
|
|
| 2010 | 10 |
16.7%
|
|
| 2011 | 13 |
21.7%
|
|
| 2012 | 4 |
6.7%
|
|
| 2013 | 10 |
16.7%
|
|
| 2014 | 7 |
11.7%
|
|
| 2015 | 3 |
5%
|
|
| 2016 | 1 |
1.7%
|
|
| Sysmiss | 172 |