| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
0.2%
|
| 0 | 1212 |
91.7%
|
|
| 5 | 27 |
2%
|
|
| 10 | 48 |
3.6%
|
|
| 15 | 5 |
0.4%
|
|
| 20 | 17 |
1.3%
|
|
| 25 | 1 |
0.1%
|
|
| 30 | 5 |
0.4%
|
|
| 40 | 3 |
0.2%
|
|
| 50 | 2 |
0.2%
|