| Value | Category | Cases | |
|---|---|---|---|
| 2008 | 1 |
3%
|
|
| 2010 | 1 |
3%
|
|
| 2011 | 1 |
3%
|
|
| 2012 | 2 |
6.1%
|
|
| 2013 | 3 |
9.1%
|
|
| 2014 | 3 |
9.1%
|
|
| 2015 | 14 |
42.4%
|
|
| 2016 | 8 |
24.2%
|
|
| Sysmiss | 306 |