| Value | Category | Cases | |
|---|---|---|---|
| 2006 | 1 |
2.3%
|
|
| 2010 | 3 |
6.8%
|
|
| 2012 | 5 |
11.4%
|
|
| 2013 | 2 |
4.5%
|
|
| 2014 | 19 |
43.2%
|
|
| 2015 | 14 |
31.8%
|
|
| Sysmiss | 1148 |