| Value | Category |
|---|---|
| -9 | Don't know |
| -8 | Refused |
| -5 | Not Applicable |
| -3 | Missing |
| 0 | |
| 10 | |
| 12 | |
| 14 | |
| 18 | |
| 20 | |
| 23 | |
| 25 | |
| 30 | |
| 35 | |
| 36 | |
| 40 | |
| 45 | |
| 50 | |
| 56 | |
| 58 | |
| 60 | |
| 70 | |
| 75 | |
| 80 | |
| 90 | |
| 100 | |
| 110 | |
| 120 | |
| 130 | |
| 139 | |
| 140 | |
| 150 | |
| 160 | |
| 165 | |
| 170 | |
| 180 | |
| 200 | |
| 220 | |
| 240 | |
| 250 | |
| 300 | |
| 350 | |
| 360 | |
| 384 | |
| 400 | |
| 480 | |
| 500 | |
| 520 | |
| 600 | |
| 650 | |
| 660 | |
| 680 | |
| 696 | |
| 720 | |
| 800 | |
| 960 | |
| 1000 | |
| 1200 | |
| 1290 | |
| 1500 | |
| 1680 | |
| 1800 | |
| 1980 | |
| 2000 | |
| 2400 | |
| 3200 | |
| 3500 | |
| 3600 | |
| 4000 | |
| Sysmiss |