| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2017 or earlier | 85 |
13.3%
|
| 2 | 2018 | 127 |
19.9%
|
| 3 | 2019 | 183 |
28.7%
|
| 4 | 2020 | 168 |
26.4%
|
| 5 | 2021 | 74 |
11.6%
|
| Missing value | 32 |