| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
3.3%
|
| 0 | 4 |
3.3%
|
|
| 10 | 1 |
0.8%
|
|
| 20 | 6 |
5%
|
|
| 30 | 2 |
1.7%
|
|
| 40 | 5 |
4.2%
|
|
| 50 | 13 |
10.8%
|
|
| 60 | 7 |
5.8%
|
|
| 70 | 7 |
5.8%
|
|
| 75 | 1 |
0.8%
|
|
| 80 | 8 |
6.7%
|
|
| 85 | 2 |
1.7%
|
|
| 90 | 5 |
4.2%
|
|
| 95 | 1 |
0.8%
|
|
| 98 | 2 |
1.7%
|
|
| 100 | 52 |
43.3%
|