| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
8.7%
|
| 1995 | 1 |
4.3%
|
|
| 1997 | 1 |
4.3%
|
|
| 2003 | 1 |
4.3%
|
|
| 2006 | 1 |
4.3%
|
|
| 2010 | 1 |
4.3%
|
|
| 2011 | 1 |
4.3%
|
|
| 2020 | 1 |
4.3%
|
|
| 2021 | 1 |
4.3%
|
|
| 2022 | 4 |
17.4%
|
|
| 2023 | 6 |
26.1%
|
|
| 2024 | 3 |
13%
|
|
| Sysmiss | 127 |