| Value | Category | Cases | |
|---|---|---|---|
| 1 | a. in 2020 | 10 |
0.9%
|
| 2 | b. in 2019 | 33 |
3.1%
|
| 3 | c. in 2018 | 9 |
0.9%
|
| 4 | d. before 2018 | 162 |
15.4%
|
| 5 | e. Never | 841 |
79.7%
|
| Sysmiss | 663 |