| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2016 | 9 |
14.3%
|
| 2 | 2017 | 5 |
7.9%
|
| 3 | 2018 | 33 |
52.4%
|
| 4 | 2019 | 16 |
25.4%
|
| d | Don't know | 0 |
0%
|
| o | Other | 0 |
0%
|
| r | Refused to answer | 0 |
0%
|
| Sysmiss | 1440 |