| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 |
3.3%
|
| 0 | 138 |
92%
|
|
| 10 | 2 |
1.3%
|
|
| 20 | 1 |
0.7%
|
|
| 35 | 1 |
0.7%
|
|
| 40 | 1 |
0.7%
|
|
| 100 | 2 |
1.3%
|