| Value | Category |
|---|---|
| -99 | Refuse to answer |
| -98 | Difficult to answer/Don't remember |
| -97 | Don't know/No information |
| -9 | Interrupted interview |
| -7 | Legal Skip |
| -3 | Interviewer error |
| 0 | |
| 4 | |
| 5 | |
| 8 | |
| 9 | |
| 10 | |
| 12 | |
| 13 | |
| 15 | |
| 18 | |
| 20 | |
| 25 | |
| 27 | |
| 28 | |
| 30 | |
| 32 | |
| 35 | |
| 37 | |
| 40 | |
| 45 | |
| 47 | |
| 50 | |
| 55 | |
| 60 | |
| 65 | |
| 70 | |
| 80 | |
| 90 | |
| 95 | |
| 98 | |
| 100 | |
| 110 | |
| 500 |