| Value | Category |
|---|---|
| -9 | Don't know |
| -8 | Refused |
| -5 | Not Applicable |
| -3 | Missing |
| -2 | Not asked in Phase 2 |
| 224 | |
| 250 | |
| 450 | |
| 490 | |
| 500 | |
| 600 | |
| 610 | |
| 668 | |
| 700 | |
| 800 | |
| 1200 | |
| 1367 | |
| 1500 | |
| 2000 | |
| 2400 | |
| 3000 | |
| 3300 | |
| 3400 | |
| 3500 | |
| 3864 | |
| 5000 | |
| 6000 | |
| 8000 | |
| 9000 | |
| 9700 | |
| 12000 | |
| 18000 | |
| 20000 | |
| 46000 | |
| 56000 | |
| 140000 | |
| 400000 | |
| Sysmiss |