| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2017 or earlier | 82 |
59.9%
|
| 2 | 2018 | 27 |
19.7%
|
| 3 | 2019 | 28 |
20.4%
|
| 4 | 2020 | 0 |
0%
|
| 5 | 2021 | 0 |
0%
|
| Missing value | 13 |