| Value | Category | Cases | |
|---|---|---|---|
| -9 | don't know | 1 |
0.1%
|
| -8 | does not apply | 0 |
0%
|
| -7 | refused to answer | 1 |
0.1%
|
| 0 | no | 20 |
2.6%
|
| 1 | yes | 734 |
97.1%
|