| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 20 |
3.2%
|
| -8 | Refusal (spontaneous) | 85 |
13.6%
|
| 0 | 13 |
2.1%
|
|
| 3 | 1 |
0.2%
|
|
| 4 | 2 |
0.3%
|
|
| 5 | 19 |
3%
|
|
| 6 | 2 |
0.3%
|
|
| 7 | 216 |
34.7%
|
|
| 8 | 245 |
39.3%
|
|
| 10 | 16 |
2.6%
|
|
| 20 | 4 |
0.6%
|