| Value | Category |
|---|---|
| -9 | Don't know |
| -8 | Refused |
| -5 | Not Applicable |
| -3 | Missing |
| -2 | Not asked in Phase 2 |
| 20 | |
| 30 | |
| 50 | |
| 70 | |
| 83 | |
| 85 | |
| 90 | |
| 100 | |
| 130 | |
| 150 | |
| 200 | |
| 225 | |
| 230 | |
| 250 | |
| 260 | |
| 300 | |
| 320 | |
| 330 | |
| 350 | |
| 390 | |
| 400 | |
| 410 | |
| 450 | |
| 500 | |
| 520 | |
| 600 | |
| 700 | |
| 710 | |
| 715 | |
| 750 | |
| 780 | |
| 800 | |
| 894 | |
| 900 | |
| 1000 | |
| 1200 | |
| 1300 | |
| 1400 | |
| 1500 | |
| 1900 | |
| 2000 | |
| 2200 | |
| 2500 | |
| 2700 | |
| 3000 | |
| 3500 | |
| 4000 | |
| 4380 | |
| 5000 | |
| 6000 | |
| 30000 | |
| Sysmiss |