| Value | Category |
|---|---|
| -9 | Don't know (spontaneous) |
| -8 | Refusal (spontaneous) |
| -7 | Does not apply |
| 0 | |
| 1 | |
| 2 | |
| 3 | |
| 4 | |
| 5 | |
| 6 | |
| 7 | |
| 8 | |
| 10 | |
| 12 | |
| 13 | |
| 14 | |
| 15 | |
| 17 | |
| 18 | |
| 20 | |
| 21 | |
| 25 | |
| 30 | |
| 35 | |
| 38 | |
| 40 | |
| 50 | |
| 58 | |
| 60 | |
| 68 | |
| 70 | |
| 74 | |
| 80 | |
| 85 | |
| 90 | |
| 100 | |
| 110 | |
| 120 | |
| 140 | |
| 150 | |
| 160 | |
| 190 | |
| 200 | |
| 300 | |
| 400 | |
| 450 | |
| 500 | |
| 600 | |
| 800 | |
| 1000 | |
| 1200 | |
| 1400 | |
| 2000 | |
| 2300 | |
| 3000 | |
| Sysmiss |