| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2017 or earlier | 232 |
33.1%
|
| 2 | 2018 | 127 |
18.1%
|
| 3 | 2019 | 188 |
26.8%
|
| 4 | 2020 | 83 |
11.8%
|
| 5 | 2021 | 71 |
10.1%
|
| Missing value | 18 |