| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2017 or earlier | 12 |
9.9%
|
| 2 | 2018 | 6 |
5%
|
| 3 | 2019 | 23 |
19%
|
| 4 | 2020 | 39 |
32.2%
|
| 5 | 2021 | 41 |
33.9%
|
| Missing value | 315 |