| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 42 |
11.7%
|
| -8 | Refusal (spontaneous) | 11 |
3.1%
|
| 1 | 1 |
0.3%
|
|
| 2 | 1 |
0.3%
|
|
| 7 | 2 |
0.6%
|
|
| 8 | 1 |
0.3%
|
|
| 10 | 125 |
34.7%
|
|
| 15 | 2 |
0.6%
|
|
| 17 | 150 |
41.7%
|
|
| 21 | 2 |
0.6%
|
|
| 25 | 2 |
0.6%
|
|
| 27 | 21 |
5.8%
|