| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 |
4.6%
|
| 2000 | 1 |
1.5%
|
|
| 2010 | 1 |
1.5%
|
|
| 2011 | 1 |
1.5%
|
|
| 2014 | 1 |
1.5%
|
|
| 2015 | 1 |
1.5%
|
|
| 2017 | 1 |
1.5%
|
|
| 2018 | 1 |
1.5%
|
|
| 2019 | 3 |
4.6%
|
|
| 2020 | 1 |
1.5%
|
|
| 2021 | 4 |
6.2%
|
|
| 2022 | 12 |
18.5%
|
|
| 2023 | 28 |
43.1%
|
|
| 2024 | 7 |
10.8%
|
|
| Sysmiss | 299 |