| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 13 |
10.8%
|
| -8 | Refusal (spontaneous) | 4 |
3.3%
|
| 50 | 1 |
0.8%
|
|
| 80 | 1 |
0.8%
|
|
| 100 | 101 |
84.2%
|