| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 66 |
45.5%
|
| -8 | Refusal (spontaneous) | 35 |
24.1%
|
| 0 | 1 |
0.7%
|
|
| 1 | 1 |
0.7%
|
|
| 3 | 1 |
0.7%
|
|
| 5 | 1 |
0.7%
|
|
| 10 | 4 |
2.8%
|
|
| 20 | 1 |
0.7%
|
|
| 21 | 1 |
0.7%
|
|
| 25 | 1 |
0.7%
|
|
| 30 | 17 |
11.7%
|
|
| 35 | 1 |
0.7%
|
|
| 40 | 5 |
3.4%
|
|
| 45 | 1 |
0.7%
|
|
| 47 | 1 |
0.7%
|
|
| 50 | 6 |
4.1%
|
|
| 60 | 2 |
1.4%
|