| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 64 |
3.9%
|
| -8 | Refusal (Spontaneous) | 2 |
0.1%
|
| 1 | Yes | 0 |
0%
|
| 2 | No | 1574 |
96%
|