| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2017 or earlier | 37 |
26.6%
|
| 2 | 2018 | 69 |
49.6%
|
| 3 | 2019 | 28 |
20.1%
|
| 4 | 2020 | 5 |
3.6%
|
| Missing value | 44 |