| Value | Category |
|---|---|
| -9 | Don't know |
| -8 | Refused |
| -5 | Not Applicable |
| -3 | Missing |
| 3 | |
| 4 | |
| 5 | |
| 6 | |
| 7 | |
| 8 | |
| 10 | |
| 12 | |
| 14 | |
| 15 | |
| 17 | |
| 20 | |
| 21 | |
| 24 | |
| 25 | |
| 26 | |
| 28 | |
| 30 | |
| 33 | |
| 34 | |
| 35 | |
| 40 | |
| 44 | |
| 45 | |
| 47 | |
| 48 | |
| 50 | |
| 52 | |
| 55 | |
| 56 | |
| 60 | |
| 65 | |
| 68 | |
| 70 | |
| 72 | |
| 80 | |
| 84 | |
| 90 | |
| 100 | |
| 112 | |
| 120 | |
| 122 | |
| 130 | |
| 135 | |
| 136 | |
| 150 | |
| 160 | |
| 200 | |
| 240 | |
| 250 | |
| 300 | |
| 320 | |
| 400 | |
| 480 | |
| 500 | |
| 600 | |
| 700 | |
| 1000 | |
| 1200 | |
| 2000 | |
| Sysmiss |