| Value | Category | Cases | |
|---|---|---|---|
| 2016 | 2 |
0.6%
|
|
| 2017 | 222 |
65.5%
|
|
| 2018 | 82 |
24.2%
|
|
| 2019 | 30 |
8.8%
|
|
| 2020 | 3 |
0.9%
|
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 14295 |