| Value | Category | Cases | |
|---|---|---|---|
| 2015 | 1 |
1.4%
|
|
| 2016 | 2 |
2.8%
|
|
| 2017 | 7 |
9.7%
|
|
| 2018 | 20 |
27.8%
|
|
| 2019 | 30 |
41.7%
|
|
| 2020 | 12 |
16.7%
|
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 12877 |