| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2017 or earlier | 91 |
36.4%
|
| 2 | 2018 | 33 |
13.2%
|
| 3 | 2019 | 70 |
28%
|
| 4 | 2020 | 42 |
16.8%
|
| 5 | 2021 | 14 |
5.6%
|
| Missing value | 16 |