| Value | Category | Cases | |
|---|---|---|---|
| -2 | don't know | 6 |
4.7%
|
| -1 | refuse | 9 |
7%
|
| 0 | 66 |
51.2%
|
|
| 1 | 0.8-1000 | 19 |
14.7%
|
| 2 | 1001-30000 | 29 |
22.5%
|
| Sysmiss | 920 |