| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 17 |
11.3%
|
| 0 | 14 |
9.3%
|
|
| 10 | 1 |
0.7%
|
|
| 15 | 1 |
0.7%
|
|
| 20 | 2 |
1.3%
|
|
| 25 | 8 |
5.3%
|
|
| 30 | 6 |
4%
|
|
| 40 | 2 |
1.3%
|
|
| 48 | 1 |
0.7%
|
|
| 50 | 10 |
6.6%
|
|
| 55 | 2 |
1.3%
|
|
| 60 | 6 |
4%
|
|
| 70 | 6 |
4%
|
|
| 75 | 2 |
1.3%
|
|
| 80 | 7 |
4.6%
|
|
| 85 | 1 |
0.7%
|
|
| 90 | 1 |
0.7%
|
|
| 95 | 1 |
0.7%
|
|
| 100 | 63 |
41.7%
|