| Value | Category | Cases | |
|---|---|---|---|
| 2017 | 58 |
18.4%
|
|
| 2018 | 197 |
62.5%
|
|
| 2019 | 53 |
16.8%
|
|
| 2020 | 7 |
2.2%
|
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 14319 |