| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 2015 | 2 |
1%
|
|
| 2016 | 1 |
0.5%
|
|
| 2017 | 3 |
1.6%
|
|
| 2018 | 5 |
2.6%
|
|
| 2019 | 14 |
7.3%
|
|
| 2020 | 15 |
7.9%
|
|
| 2021 | 54 |
28.3%
|
|
| 2022 | 60 |
31.4%
|
|
| 2023 | 35 |
18.3%
|
|
| 2024 | 2 |
1%
|
|
| Sysmiss | 167 |