| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2016 | 30 |
10.3%
|
| 2 | 2017 | 28 |
9.7%
|
| 3 | 2018 | 171 |
59%
|
| 4 | 2019 | 61 |
21%
|
| d | Don't know | 0 |
0%
|
| o | Other | 0 |
0%
|
| r | Refused to answer | 0 |
0%
|
| Sysmiss | 1213 |