| Value | Category | Cases | |
|---|---|---|---|
| 2010 | 2 |
1.2%
|
|
| 2011 | 1 |
0.6%
|
|
| 2012 | 1 |
0.6%
|
|
| 2013 | 3 |
1.8%
|
|
| 2014 | 9 |
5.5%
|
|
| 2015 | 51 |
31.3%
|
|
| 2016 | 96 |
58.9%
|
|
| Sysmiss | 69 |