| Value | Category |
|---|---|
| -9 | do not know |
| 0 | |
| 1000 | |
| 1500 | |
| 2000 | |
| 3000 | |
| 4000 | |
| 4500 | |
| 4700 | |
| 5000 | |
| 6000 | |
| 8000 | |
| 9000 | |
| 10000 | |
| 11000 | |
| 12000 | |
| 15000 | |
| 18000 | |
| 18500 | |
| 20000 | |
| 25000 | |
| 30000 | |
| 31000 | |
| 35000 | |
| 36000 | |
| 40000 | |
| 42000 | |
| 45000 | |
| 50000 | |
| 60000 | |
| 70000 | |
| 80000 | |
| 100000 | |
| 110000 | |
| 120000 | |
| 123000 | |
| 160000 | |
| 180000 | |
| 200000 | |
| 300000 | |
| 350000 | |
| Sysmiss |