| Value | Category | Cases | |
|---|---|---|---|
| 2013 | 209 |
17.2%
|
|
| 2014 | 319 |
26.3%
|
|
| 2015 | 396 |
32.6%
|
|
| 2016 | 291 |
24%
|
|
| Sysmiss | 4821 |