| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2017 or earlier | 31 |
33%
|
| 2 | 2018 | 11 |
11.7%
|
| 3 | 2019 | 4 |
4.3%
|
| 4 | 2020 | 9 |
9.6%
|
| 5 | 2021 | 23 |
24.5%
|
| 6 | 2022 | 16 |
17%
|
| Missing value | 180 |