| Value | Category |
|---|---|
| -9 | Don't know (spontaneous) |
| -8 | Refusal (spontaneous) |
| -7 | Does not apply |
| 0 | |
| 1 | |
| 2 | |
| 3 | |
| 4 | |
| 5 | |
| 6 | |
| 7 | |
| 8 | |
| 9 | |
| 10 | |
| 11 | |
| 12 | |
| 13 | |
| 14 | |
| 15 | |
| 16 | |
| 17 | |
| 18 | |
| 19 | |
| 20 | |
| 21 | |
| 22 | |
| 23 | |
| 25 | |
| 27 | |
| 28 | |
| 29 | |
| 30 | |
| 32 | |
| 34 | |
| 35 | |
| 36 | |
| 37 | |
| 38 | |
| 40 | |
| 42 | |
| 44 | |
| 45 | |
| 50 | |
| 52 | |
| 53 | |
| 54 | |
| 55 | |
| 60 | |
| 62 | |
| 63 | |
| 65 | |
| 66 | |
| 68 | |
| 70 | |
| 75 | |
| 77 | |
| 80 | |
| 82 | |
| 83 | |
| 85 | |
| 89 | |
| 92 | |
| 95 | |
| 98 | |
| 100 | |
| 102 | |
| 107 | |
| 118 | |
| 130 | |
| 140 | |
| 145 | |
| 150 | |
| 175 | |
| 180 | |
| 185 | |
| 187 | |
| 200 | |
| 205 | |
| 211 | |
| 212 | |
| 223 | |
| 225 | |
| 250 | |
| 267 | |
| 276 | |
| 280 | |
| 300 | |
| 322 | |
| 337 | |
| 350 | |
| 400 | |
| 416 | |
| 516 | |
| 585 | |
| 980 | |
| 1020 | |
| 1480 | |
| 1500 | |
| 2000 | |
| Sysmiss |