| Value | Category |
|---|---|
| -9 | Don't know |
| -7 | Legal skip |
| -6 | Unfinished questionnaire |
| -3 | Interviewer error |
| 1 | official language |
| 2 | 2nd official language (if applicable) |
| 3 | other language (country to specify) |
| 4 | other language (country to specify) |
| 5 | other language (country to specify) |
| 6 | Other |