| Value | Category | Cases | |
|---|---|---|---|
| 2006 | 2 |
5.1%
|
|
| 2007 | 1 |
2.6%
|
|
| 2012 | 1 |
2.6%
|
|
| 2013 | 2 |
5.1%
|
|
| 2014 | 17 |
43.6%
|
|
| 2015 | 7 |
17.9%
|
|
| 2016 | 9 |
23.1%
|
|
| Sysmiss | 185 |