| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
8.3%
|
| 2014 | 1 |
4.2%
|
|
| 2018 | 1 |
4.2%
|
|
| 2019 | 2 |
8.3%
|
|
| 2020 | 1 |
4.2%
|
|
| 2021 | 1 |
4.2%
|
|
| 2022 | 5 |
20.8%
|
|
| 2023 | 8 |
33.3%
|
|
| 2024 | 3 |
12.5%
|
|
| Sysmiss | 132 |