| 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 | |
| 15 | |
| 16 | |
| 17 | |
| 18 | |
| 20 | |
| 22 | |
| 25 | |
| 28 | |
| 30 | |
| 32 | |
| 35 | |
| 36 | |
| 40 | |
| 41 | |
| 44 | |
| 45 | |
| 48 | |
| 49 | |
| 50 | |
| 56 | |
| 58 | |
| 60 | |
| 64 | |
| 70 | |
| 75 | |
| 78 | |
| 80 | |
| 90 | |
| 94 | |
| 100 | |
| 101 | |
| 110 | |
| 120 | |
| 125 | |
| 147 | |
| 150 | |
| 168 | |
| 200 | |
| 230 | |
| 250 | |
| 257 | |
| 280 | |
| 390 | |
| 400 | |
| 450 | |
| 500 | |
| 540 | |
| 585 | |
| 638 | |
| 800 | |
| 1250 | |
| 1353 | |
| Sysmiss |