| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2017 or earlier | 110 |
13.1%
|
| 2 | 2018 | 166 |
19.8%
|
| 3 | 2019 | 229 |
27.3%
|
| 4 | 2020 | 207 |
24.6%
|
| 5 | 2021 | 128 |
15.2%
|
| Missing value | 53 |