| Value | Category | Cases | |
|---|---|---|---|
| 2014 | 4 |
0.4%
|
|
| 2015 | 10 |
0.9%
|
|
| 2016 | 342 |
31.2%
|
|
| 2017 | 706 |
64.5%
|
|
| 9998 | NSP | 33 |
3%
|
| Sysmiss | 761 |