| Value | Category | Cases | |
|---|---|---|---|
| 2012 | 2992 |
14%
|
|
| 2013 | 4306 |
20.2%
|
|
| 2014 | 4236 |
19.8%
|
|
| 2015 | 3979 |
18.6%
|
|
| 2016 | 4557 |
21.3%
|
|
| 2017 | 851 |
4%
|
|
| 9998 | DK | 5 |
0%
|
| Sysmiss | 433 |
2%
|