| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 58 |
48.3%
|
| -8 | Refusal (spontaneous) | 8 |
6.7%
|
| 0 | 2 |
1.7%
|
|
| 20 | 1 |
0.8%
|
|
| 30 | 1 |
0.8%
|
|
| 50 | 4 |
3.3%
|
|
| 60 | 2 |
1.7%
|
|
| 65 | 1 |
0.8%
|
|
| 70 | 1 |
0.8%
|
|
| 80 | 2 |
1.7%
|
|
| 85 | 1 |
0.8%
|
|
| 100 | 39 |
32.5%
|