| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2017 or earlier | 305 |
9.2%
|
| 2 | 2018 | 1739 |
52.6%
|
| 3 | 2019 | 1003 |
30.4%
|
| 4 | 2020 | 156 |
4.7%
|
| 5 | 2021 | 101 |
3.1%
|
| Missing value | 39 |