| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 50 | 12 |
7.4%
|
|
| 60 | 2 |
1.2%
|
|
| 70 | 8 |
4.9%
|
|
| 80 | 13 |
8%
|
|
| 90 | 3 |
1.8%
|
|
| 100 | 125 |
76.7%
|