| 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 | |
| 10 | |
| 15 | |
| 20 | |
| 25 | |
| 30 | |
| 40 | |
| 42 | |
| 45 | |
| 48 | |
| 50 | |
| 55 | |
| 60 | |
| 70 | |
| 75 | |
| 80 | |
| 85 | |
| 90 | |
| 97 | |
| 100 | |
| 105 | |
| 110 | |
| 115 | |
| 120 | |
| 130 | |
| 150 | |
| 170 | |
| 200 | |
| 240 | |
| 250 | |
| 300 | |
| Sysmiss |