| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2017 or earlier | 327 |
17.9%
|
| 2 | 2018 | 527 |
28.9%
|
| 3 | 2019 | 630 |
34.5%
|
| 4 | 2020 | 303 |
16.6%
|
| 5 | 2021 | 37 |
2%
|
| Missing value | 51 |