| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
1%
|
| 0 | 63 |
61.2%
|
|
| 5 | 1 |
1%
|
|
| 10 | 6 |
5.8%
|
|
| 15 | 2 |
1.9%
|
|
| 20 | 6 |
5.8%
|
|
| 25 | 9 |
8.7%
|
|
| 28 | 1 |
1%
|
|
| 30 | 2 |
1.9%
|
|
| 35 | 1 |
1%
|
|
| 40 | 2 |
1.9%
|
|
| 50 | 6 |
5.8%
|
|
| 55 | 1 |
1%
|
|
| 75 | 2 |
1.9%
|