| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 71 |
24.3%
|
| -8 | Refusal (spontaneous) | 6 |
2.1%
|
| 0 | 137 |
46.9%
|
|
| 1 | 18 |
6.2%
|
|
| 2 | 21 |
7.2%
|
|
| 3 | 6 |
2.1%
|
|
| 4 | 7 |
2.4%
|
|
| 5 | 7 |
2.4%
|
|
| 6 | 2 |
0.7%
|
|
| 7 | 1 |
0.3%
|
|
| 9 | 1 |
0.3%
|
|
| 10 | 13 |
4.5%
|
|
| 15 | 1 |
0.3%
|
|
| 18 | 1 |
0.3%
|