| Value | Category | Cases | |
|---|---|---|---|
| 2015 | 6 |
5.9%
|
|
| 2016 | 32 |
31.7%
|
|
| 2017 | 40 |
39.6%
|
|
| 2018 | 17 |
16.8%
|
|
| 2019 | 2 |
2%
|
|
| 9998 | 4 |
4%
|
|
| Sysmiss | 21117 |