| Value | Category | Cases | |
|---|---|---|---|
| 2011 | 2 |
0.4%
|
|
| 2012 | 9 |
2%
|
|
| 2013 | 65 |
14.5%
|
|
| 2014 | 122 |
27.2%
|
|
| 2015 | 178 |
39.6%
|
|
| 2016 | 73 |
16.3%
|
|
| Sysmiss | 12434 |