| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2017 or earlier | 15 |
21.7%
|
| 2 | 2018 - 2019 | 28 |
40.6%
|
| 3 | 2020 - 2021 | 26 |
37.7%
|
| Missing value | 11 |