| Value | Category | Cases | |
|---|---|---|---|
| 2017 | 6 |
0.3%
|
|
| 2018 | 583 |
29.2%
|
|
| 2019 | 1179 |
59.1%
|
|
| 2020 | 227 |
11.4%
|
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 12639 |