| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2017 or earlier | 67 |
19.7%
|
| 2 | 2018 | 125 |
36.8%
|
| 3 | 2019 | 119 |
35%
|
| 4 | 2020 | 18 |
5.3%
|
| 5 | 2021 | 11 |
3.2%
|
| Missing value | 66 |