| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2019 | 23 |
17.8%
|
| 2 | 2018 | 11 |
8.5%
|
| 3 | 2017 | 24 |
18.6%
|
| 4 | Before 2017 | 71 |
55%
|
| Sysmiss | 4415 |