| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 37 |
100%
|
| 40 | 0 | ||
| 50 | 0 | ||
| 60 | 0 | ||
| 70 | 0 | ||
| 80 | 0 | ||
| 100 | 0 |