| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2017 or earlier | 15 |
23.8%
|
| 2 | 2018 - 2019 | 36 |
57.1%
|
| 3 | 2020 - 2021 | 12 |
19%
|
| Missing value | 16 |