| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -8 | Refusal (spontaneous) | 0 |
0%
|
| 0 | 255 |
49.5%
|
|
| 1 | 182 |
35.3%
|
|
| 2 | 58 |
11.3%
|
|
| 3 | 14 |
2.7%
|
|
| 4 | 5 |
1%
|
|
| 8 | 1 |
0.2%
|