| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 |
0.4%
|
| 0 | 1200 |
98.7%
|
|
| 1 | 1 |
0.1%
|
|
| 10 | 4 |
0.3%
|
|
| 20 | 1 |
0.1%
|
|
| 25 | 1 |
0.1%
|
|
| 30 | 1 |
0.1%
|
|
| 40 | 1 |
0.1%
|
|
| 50 | 1 |
0.1%
|
|
| 100 | 1 |
0.1%
|