| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 27 |
18%
|
| -8 | Refusal (spontaneous) | 5 |
3.3%
|
| 0 | 10 |
6.7%
|
|
| 1 | 9 |
6%
|
|
| 2 | 2 |
1.3%
|
|
| 3 | 4 |
2.7%
|
|
| 4 | 2 |
1.3%
|
|
| 5 | 4 |
2.7%
|
|
| 10 | 27 |
18%
|
|
| 12 | 2 |
1.3%
|
|
| 14 | 1 |
0.7%
|
|
| 15 | 11 |
7.3%
|
|
| 17 | 2 |
1.3%
|
|
| 20 | 7 |
4.7%
|
|
| 25 | 37 |
24.7%
|