| Value | Category | Cases | |
|---|---|---|---|
| -9 | -9. Don't know | 0 |
0%
|
| -8 | -8. Refused | 1 |
100%
|
| -7 | -7. More than 10 years ago | 0 |
0%
|
| -5 | -5. This year | 0 |
0%
|
| Sysmiss | 98 |