| Value | Category | Cases | |
|---|---|---|---|
| -9 | -9. Don't know | 0 |
0%
|
| -8 | -8. Refused | 0 |
0%
|
| 3800 | 1 |
50%
|
|
| 8000 | 1 |
50%
|
|
| Sysmiss | 232 |