| Value | Category |
|---|---|
| -9 | Don't know |
| -8 | Refusal |
| -7 | Does not apply |
| 3000000 | |
| 19000000 | |
| 37000000 | |
| 40000000 | |
| 43000000 | |
| 51000000 | |
| 60000000 | |
| 80000000 | |
| 150000000 | |
| 274000000 | |
| 352000000 | |
| 372000000 | |
| 420000000 | |
| 600000000 | |
| 650000000 | |
| 700000000 | |
| 750000000 | |
| 1300000000 | |
| 1500000000 | |
| 1972000000 | |
| Sysmiss |