| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2017 or earlier | 99 |
11.7%
|
| 2 | 2018 | 141 |
16.6%
|
| 3 | 2019 | 230 |
27.2%
|
| 4 | 2020 | 218 |
25.7%
|
| 5 | 2021 | 159 |
18.8%
|
| Missing value | 46 |