| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2017 or earlier | 842 |
21.7%
|
| 2 | 2018 | 703 |
18.1%
|
| 3 | 2019 | 978 |
25.2%
|
| 4 | 2020 | 646 |
16.6%
|
| 5 | 2021 | 712 |
18.3%
|
| Missing value | 69 |