| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 70 |
63.1%
|
| -8 | Refusal (spontaneous) | 21 |
18.9%
|
| 0 | 5 |
4.5%
|
|
| 8 | 2 |
1.8%
|
|
| 10 | 3 |
2.7%
|
|
| 14 | 1 |
0.9%
|
|
| 15 | 9 |
8.1%
|