| Value | Category |
|---|---|
| -9 | Don't know |
| -8 | Refused |
| -5 | Not Applicable |
| -3 | Missing |
| 6 | |
| 10 | |
| 15 | |
| 24 | |
| 25 | |
| 29 | |
| 40 | |
| 46 | |
| 50 | |
| 55 | |
| 78 | |
| 95 | |
| 96 | |
| 120 | |
| 170 | |
| 280 | |
| 340 | |
| 450 | |
| 500 | |
| 700 | |
| 800 | |
| 850 | |
| 900 | |
| 1000 | |
| 1200 | |
| 1208 | |
| 1300 | |
| 1400 | |
| 1500 | |
| 1600 | |
| 1800 | |
| 2000 | |
| 2015 | |
| 3000 | |
| 3200 | |
| 3600 | |
| 3659 | |
| 4000 | |
| 4500 | |
| 4700 | |
| 5000 | |
| 6400 | |
| 8500 | |
| 9000 | |
| Sysmiss |