| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2017 or earlier | 181 |
16.1%
|
| 2 | 2018 | 332 |
29.6%
|
| 3 | 2019 | 372 |
33.2%
|
| 4 | 2020 | 155 |
13.8%
|
| 5 | 2021 | 82 |
7.3%
|
| Missing value | 24 |