| Value | Category |
|---|---|
| -9 | Don't know |
| -8 | Refused |
| -5 | Not Applicable |
| -3 | Missing |
| -2 | Not asked in Phase 2 |
| 80 | |
| 100 | |
| 150 | |
| 200 | |
| 250 | |
| 280 | |
| 300 | |
| 350 | |
| 400 | |
| 440 | |
| 450 | |
| 500 | |
| 600 | |
| 620 | |
| 800 | |
| 850 | |
| 1000 | |
| 1200 | |
| 1500 | |
| 1800 | |
| 2000 | |
| 2200 | |
| 2250 | |
| 2500 | |
| 2600 | |
| 2900 | |
| 3100 | |
| 3500 | |
| 4000 | |
| 4300 | |
| 6000 | |
| 12000 | |
| 14000 | |
| Sysmiss |