| Value | Category | Cases | |
|---|---|---|---|
| 777 | Not applicable | 0 |
0%
|
| 888 | Respondent refuses to answer | 0 |
0%
|
| 999 | Respondent does not know | 0 |
0%
|
| 2015 | 1 |
4.3%
|
|
| 2016 | 22 |
95.7%
|
|
| Sysmiss | 404 |