| Value | Category |
|---|---|
| -9 | Don't know |
| -8 | Refused |
| -5 | Not Applicable |
| -3 | Missing |
| -2 | Not asked in Phase 2 |
| 1 | |
| 4 | |
| 20 | |
| 24 | |
| 30 | |
| 50 | |
| 90 | |
| 100 | |
| 120 | |
| 150 | |
| 160 | |
| 168 | |
| 170 | |
| 180 | |
| 200 | |
| 250 | |
| 280 | |
| 300 | |
| 350 | |
| 400 | |
| 500 | |
| 510 | |
| 600 | |
| 700 | |
| 800 | |
| 900 | |
| 1000 | |
| 1200 | |
| 1280 | |
| 1300 | |
| 1500 | |
| 2000 | |
| 2400 | |
| 2500 | |
| 2800 | |
| 3000 | |
| 3500 | |
| 5000 | |
| 8000 | |
| 9000 | |
| 10000 | |
| 14000 | |
| 23000 | |
| Sysmiss |