| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 |
1.1%
|
| 1985 | 1 |
0.4%
|
|
| 1992 | 1 |
0.4%
|
|
| 2000 | 1 |
0.4%
|
|
| 2001 | 1 |
0.4%
|
|
| 2002 | 1 |
0.4%
|
|
| 2004 | 4 |
1.5%
|
|
| 2007 | 1 |
0.4%
|
|
| 2008 | 4 |
1.5%
|
|
| 2010 | 1 |
0.4%
|
|
| 2013 | 1 |
0.4%
|
|
| 2014 | 1 |
0.4%
|
|
| 2015 | 3 |
1.1%
|
|
| 2016 | 2 |
0.7%
|
|
| 2017 | 8 |
3%
|
|
| 2018 | 11 |
4.1%
|
|
| 2019 | 10 |
3.7%
|
|
| 2020 | 29 |
10.8%
|
|
| 2021 | 33 |
12.3%
|
|
| 2022 | 34 |
12.6%
|
|
| 2023 | 71 |
26.4%
|
|
| 2024 | 48 |
17.8%
|
|
| Sysmiss | 340 |