| Value | Category |
|---|---|
| -9 | Don't know |
| -8 | Refused |
| -5 | Not Applicable |
| -3 | Missing |
| -2 | Not asked in Phase 2 |
| 25 | |
| 30 | |
| 35 | |
| 50 | |
| 60 | |
| 75 | |
| 80 | |
| 90 | |
| 100 | |
| 110 | |
| 120 | |
| 150 | |
| 160 | |
| 195 | |
| 200 | |
| 220 | |
| 250 | |
| 300 | |
| 350 | |
| 400 | |
| 420 | |
| 450 | |
| 500 | |
| 520 | |
| 550 | |
| 590 | |
| 600 | |
| 650 | |
| 670 | |
| 800 | |
| 850 | |
| 894 | |
| 920 | |
| 1000 | |
| 1400 | |
| 1500 | |
| 1600 | |
| 1900 | |
| 2000 | |
| 2500 | |
| 3900 | |
| 4000 | |
| Sysmiss |