| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2017 or earlier | 177 |
15.7%
|
| 2 | 2018 | 314 |
27.8%
|
| 3 | 2019 | 261 |
23.1%
|
| 4 | 2020 | 109 |
9.6%
|
| 5 | 2021 | 269 |
23.8%
|
| Missing value | 3363 |