| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | 1313 |
99.3%
|
|
| 5 | 4 |
0.3%
|
|
| 10 | 3 |
0.2%
|
|
| 15 | 1 |
0.1%
|
|
| 20 | 1 |
0.1%
|