| Value | Category |
|---|---|
| -9 | Don't Know |
| -8 | Refused |
| -5 | Not Applicable |
| -3 | Missing |
| 0 | |
| 6 | |
| 10 | |
| 12 | |
| 13 | |
| 15 | |
| 17 | |
| 18 | |
| 20 | |
| 25 | |
| 26 | |
| 27 | |
| 30 | |
| 35 | |
| 37 | |
| 39 | |
| 40 | |
| 43 | |
| 45 | |
| 50 | |
| 60 | |
| 70 | |
| 75 | |
| 80 | |
| 100 | |
| 120 | |
| 130 | |
| 135 | |
| 140 | |
| 150 | |
| 180 | |
| 190 | |
| 200 | |
| 220 | |
| 224 | |
| 230 | |
| 280 | |
| 290 | |
| 350 | |
| 400 | |
| 480 | |
| 500 | |
| 512 | |
| 600 | |
| 680 | |
| 780 | |
| 800 | |
| 847 | |
| 1500 | |
| 2700 | |
| 3000 | |
| 4500 | |
| 5000 | |
| 10000 | |
| 14000 | |
| 15000 | |
| Sysmiss |