| Value | Category | Cases | |
|---|---|---|---|
| 2011 | 3 |
0.2%
|
|
| 2012 | 147 |
7.4%
|
|
| 2013 | 268 |
13.4%
|
|
| 2014 | 315 |
15.8%
|
|
| 2015 | 355 |
17.8%
|
|
| 2016 | 620 |
31%
|
|
| 2017 | 291 |
14.6%
|
|
| Sysmiss | 3080 |