| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 |
2.7%
|
| 0 | 16 |
14.4%
|
|
| 10 | 2 |
1.8%
|
|
| 20 | 2 |
1.8%
|
|
| 40 | 2 |
1.8%
|
|
| 50 | 2 |
1.8%
|
|
| 60 | 1 |
0.9%
|
|
| 80 | 2 |
1.8%
|
|
| 90 | 2 |
1.8%
|
|
| 100 | 79 |
71.2%
|