| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
2%
|
| 2013 | 1 |
0.5%
|
|
| 2014 | 1 |
0.5%
|
|
| 2015 | 1 |
0.5%
|
|
| 2017 | 1 |
0.5%
|
|
| 2018 | 9 |
4.4%
|
|
| 2019 | 14 |
6.8%
|
|
| 2020 | 19 |
9.3%
|
|
| 2021 | 19 |
9.3%
|
|
| 2022 | 81 |
39.5%
|
|
| 2023 | 55 |
26.8%
|
|
| Sysmiss | 149 |