| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 2015 | 1 |
4.3%
|
|
| 2017 | 1 |
4.3%
|
|
| 2019 | 1 |
4.3%
|
|
| 2020 | 2 |
8.7%
|
|
| 2021 | 7 |
30.4%
|
|
| 2022 | 10 |
43.5%
|
|
| 2023 | 1 |
4.3%
|
|
| Sysmiss | 139 |