| Value | Category |
|---|---|
| -9 | Don't Know |
| -8 | Refused |
| -5 | Not Applicable |
| -3 | Missing |
| 0 | |
| 1 | |
| 2 | |
| 3 | |
| 4 | |
| 5 | |
| 6 | |
| 7 | |
| 8 | |
| 10 | |
| 12 | |
| 15 | |
| 16 | |
| 20 | |
| 25 | |
| 30 | |
| 35 | |
| 40 | |
| 50 | |
| 60 | |
| 70 | |
| 80 | |
| 90 | |
| 100 | |
| 120 | |
| 125 | |
| 130 | |
| 140 | |
| 150 | |
| 160 | |
| 180 | |
| 188 | |
| 200 | |
| 240 | |
| 250 | |
| 280 | |
| 290 | |
| 300 | |
| 302 | |
| 310 | |
| 320 | |
| 350 | |
| 400 | |
| 440 | |
| 450 | |
| 480 | |
| 500 | |
| 600 | |
| 640 | |
| 750 | |
| 800 | |
| 960 | |
| 980 | |
| 1000 | |
| 1200 | |
| 1250 | |
| 1440 | |
| 1840 | |
| 2000 | |
| 100000 | |
| Sysmiss |