| Value | Category |
|---|---|
| -9 | Don't know |
| -8 | Refused |
| -5 | Not Applicable |
| -3 | Missing |
| 0 | |
| 6 | |
| 7 | |
| 8 | |
| 10 | |
| 20 | |
| 25 | |
| 27 | |
| 30 | |
| 32 | |
| 35 | |
| 37 | |
| 38 | |
| 40 | |
| 45 | |
| 48 | |
| 50 | |
| 54 | |
| 55 | |
| 56 | |
| 58 | |
| 59 | |
| 60 | |
| 64 | |
| 65 | |
| 69 | |
| 70 | |
| 72 | |
| 74 | |
| 75 | |
| 78 | |
| 79 | |
| 80 | |
| 82 | |
| 85 | |
| 86 | |
| 87 | |
| 89 | |
| 90 | |
| 95 | |
| 99 | |
| 100 | |
| 105 | |
| 108 | |
| 110 | |
| 120 | |
| 130 | |
| 150 | |
| 160 | |
| 168 | |
| 200 | |
| 210 | |
| 225 | |
| 240 | |
| 248 | |
| 250 | |
| 255 | |
| 270 | |
| 279 | |
| 300 | |
| 330 | |
| 390 | |
| 400 | |
| 500 | |
| 517 | |
| 535 | |
| 540 | |
| 600 | |
| 650 | |
| Sysmiss |