| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2017 or earlier | 76 |
11.9%
|
| 2 | 2018 | 111 |
17.4%
|
| 3 | 2019 | 189 |
29.7%
|
| 4 | 2020 | 175 |
27.5%
|
| 5 | 2021 | 86 |
13.5%
|
| Missing value | 32 |