| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2019 | 2 |
66.7%
|
| 2 | 2018 | 0 |
0%
|
| 3 | 2017 | 0 |
0%
|
| 4 | Before 2017 | 1 |
33.3%
|
| Sysmiss | 4541 |