| Value | Category | Cases | |
|---|---|---|---|
| 2009 | 1 |
0.4%
|
|
| 2010 | 1 |
0.4%
|
|
| 2012 | 1 |
0.4%
|
|
| 2014 | 13 |
5.1%
|
|
| 2015 | 92 |
35.9%
|
|
| 2016 | 148 |
57.8%
|
|
| Sysmiss | 83 |