| Value | Category | Cases | |
|---|---|---|---|
| 2013 | 165 |
11.3%
|
|
| 2014 | 347 |
23.7%
|
|
| 2015 | 403 |
27.5%
|
|
| 2016 | 325 |
22.2%
|
|
| 2017 | 161 |
11%
|
|
| 2018 | 63 |
4.3%
|
|
| 9998 | DK | 0 |
0%
|
| Sysmiss | 56335 |