| Value | Category | Cases | |
|---|---|---|---|
| -9 | Refuse to answer | 4 |
0.1%
|
| -8 | I don't know | 201 |
7.2%
|
| 0 | No | 395 |
14.1%
|
| 1 | Yes | 1743 |
62.2%
|
| 2 | 461 |
16.4%
|