| Value | Category | Cases | |
|---|---|---|---|
| -2 | don't know | 6 |
4.7%
|
| -1 | refuse | 6 |
4.7%
|
| 0 | 64 |
49.6%
|
|
| 1 | 0.5-1000 | 44 |
34.1%
|
| 2 | 1001-80000 | 9 |
7%
|
| Sysmiss | 920 |