| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
2.6%
|
| 0 | 126 |
82.4%
|
|
| 10 | 10 |
6.5%
|
|
| 20 | 5 |
3.3%
|
|
| 25 | 1 |
0.7%
|
|
| 30 | 2 |
1.3%
|
|
| 40 | 1 |
0.7%
|
|
| 50 | 1 |
0.7%
|
|
| 60 | 1 |
0.7%
|
|
| 70 | 1 |
0.7%
|
|
| 90 | 1 |
0.7%
|