| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 |
3.3%
|
| 0 | 95 |
63.3%
|
|
| 7 | 2 |
1.3%
|
|
| 10 | 4 |
2.7%
|
|
| 15 | 2 |
1.3%
|
|
| 20 | 10 |
6.7%
|
|
| 25 | 1 |
0.7%
|
|
| 30 | 4 |
2.7%
|
|
| 35 | 1 |
0.7%
|
|
| 40 | 10 |
6.7%
|
|
| 50 | 8 |
5.3%
|
|
| 60 | 4 |
2.7%
|
|
| 70 | 4 |
2.7%
|