| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | 97 |
87.4%
|
|
| 20 | 1 |
0.9%
|
|
| 40 | 1 |
0.9%
|
|
| 100 | 12 |
10.8%
|