| Value | Category | Cases | |
|---|---|---|---|
| 2010 | 4 |
1.5%
|
|
| 2011 | 2 |
0.7%
|
|
| 2012 | 5 |
1.8%
|
|
| 2013 | 11 |
4.1%
|
|
| 2014 | 41 |
15.1%
|
|
| 2015 | 189 |
69.7%
|
|
| 2016 | 19 |
7%
|
|
| Sysmiss | 9819 |