| Value | Category | Cases | |
|---|---|---|---|
| -9 | -9. Don't know | 0 |
0%
|
| -7 | -7. father and mother included | 0 |
0%
|
| 7500 | 1 |
33.3%
|
|
| 8000 | 1 |
33.3%
|
|
| 30000 | 1 |
33.3%
|
|
| Sysmiss | 96 |