| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2017 or earlier | 123 |
18.4%
|
| 2 | 2018 | 204 |
30.5%
|
| 3 | 2019 | 162 |
24.2%
|
| 4 | 2020 | 61 |
9.1%
|
| 5 | 2021 | 119 |
17.8%
|
| Missing value | 1938 |