| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 19 |
5.2%
|
| 2009 | 1 |
0.3%
|
|
| 2013 | 1 |
0.3%
|
|
| 2016 | 1 |
0.3%
|
|
| 2017 | 1 |
0.3%
|
|
| 2018 | 4 |
1.1%
|
|
| 2019 | 1 |
0.3%
|
|
| 2020 | 16 |
4.4%
|
|
| 2021 | 28 |
7.7%
|
|
| 2022 | 36 |
9.9%
|
|
| 2023 | 129 |
35.4%
|
|
| 2024 | 120 |
33%
|
|
| 2025 | 7 |
1.9%
|
|
| Sysmiss | 1052 |