| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 2015 | 1 |
0.4%
|
|
| 2016 | 1 |
0.4%
|
|
| 2018 | 2 |
0.9%
|
|
| 2019 | 3 |
1.3%
|
|
| 2020 | 14 |
6.3%
|
|
| 2021 | 31 |
13.9%
|
|
| 2022 | 63 |
28.3%
|
|
| 2023 | 108 |
48.4%
|
|
| Sysmiss | 790 |