| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 14 |
3.8%
|
| 0 | 168 |
45.7%
|
|
| 30 | 1 |
0.3%
|
|
| 50 | 2 |
0.5%
|
|
| 70 | 1 |
0.3%
|
|
| 80 | 1 |
0.3%
|
|
| 90 | 1 |
0.3%
|
|
| 95 | 1 |
0.3%
|
|
| 100 | 179 |
48.6%
|