| Value | Category | Cases | |
|---|---|---|---|
| -9 | don't know | 6 |
0.8%
|
| -8 | does not apply | 746 |
98.7%
|
| -7 | refused to answer | 0 |
0%
|
| 1 | 2 |
0.3%
|
|
| 2 | 1 |
0.1%
|
|
| 5 | 1 |
0.1%
|