| Value | Category | Cases | |
|---|---|---|---|
| 2017 | 83 |
10.2%
|
|
| 2018 | 210 |
25.9%
|
|
| 2019 | 424 |
52.3%
|
|
| 2020 | 91 |
11.2%
|
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | don't know | 2 |
0.2%
|
| Sysmiss | 7282 |