| Value | Category |
|---|---|
| -9 | Don't Know |
| -8 | Refused |
| -5 | Not Applicable |
| -3 | Missing |
| -2 | Not asked in Phase 2 |
| 20 | |
| 30 | |
| 35 | |
| 40 | |
| 50 | |
| 60 | |
| 80 | |
| 100 | |
| 120 | |
| 130 | |
| 150 | |
| 200 | |
| 250 | |
| 300 | |
| 330 | |
| 350 | |
| 400 | |
| 500 | |
| 600 | |
| 670 | |
| 800 | |
| 900 | |
| 1000 | |
| 1200 | |
| 1300 | |
| 1500 | |
| 1700 | |
| 2000 | |
| 2600 | |
| 3000 | |
| 3200 | |
| 3400 | |
| 3600 | |
| 4000 | |
| 5500 | |
| 6000 | |
| 11500 | |
| 20200 | |
| Sysmiss |