| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
0.5%
|
| 0 | 340 |
90.2%
|
|
| 10 | 2 |
0.5%
|
|
| 20 | 1 |
0.3%
|
|
| 33 | 1 |
0.3%
|
|
| 50 | 2 |
0.5%
|
|
| 60 | 1 |
0.3%
|
|
| 80 | 1 |
0.3%
|
|
| 90 | 2 |
0.5%
|
|
| 100 | 25 |
6.6%
|