| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
1%
|
| 0 | 192 |
91.9%
|
|
| 5 | 2 |
1%
|
|
| 15 | 1 |
0.5%
|
|
| 20 | 2 |
1%
|
|
| 51 | 1 |
0.5%
|
|
| 70 | 1 |
0.5%
|
|
| 80 | 1 |
0.5%
|
|
| 100 | 7 |
3.3%
|