| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 19 |
12.6%
|
| 2 | 3 |
2%
|
|
| 4 | 1 |
0.7%
|
|
| 5 | 4 |
2.6%
|
|
| 8 | 1 |
0.7%
|
|
| 10 | 5 |
3.3%
|
|
| 15 | 2 |
1.3%
|
|
| 18 | 1 |
0.7%
|
|
| 20 | 1 |
0.7%
|
|
| 30 | 2 |
1.3%
|
|
| 45 | 1 |
0.7%
|
|
| 50 | 10 |
6.6%
|
|
| 55 | 1 |
0.7%
|
|
| 57 | 1 |
0.7%
|
|
| 60 | 7 |
4.6%
|
|
| 65 | 1 |
0.7%
|
|
| 70 | 14 |
9.3%
|
|
| 75 | 13 |
8.6%
|
|
| 80 | 31 |
20.5%
|
|
| 90 | 10 |
6.6%
|
|
| 100 | 23 |
15.2%
|