| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 12 |
8%
|
| 0 | 1 |
0.7%
|
|
| 5 | 2 |
1.3%
|
|
| 10 | 1 |
0.7%
|
|
| 15 | 2 |
1.3%
|
|
| 20 | 2 |
1.3%
|
|
| 25 | 2 |
1.3%
|
|
| 30 | 2 |
1.3%
|
|
| 36 | 1 |
0.7%
|
|
| 40 | 2 |
1.3%
|
|
| 50 | 6 |
4%
|
|
| 55 | 1 |
0.7%
|
|
| 60 | 9 |
6%
|
|
| 61 | 1 |
0.7%
|
|
| 70 | 23 |
15.3%
|
|
| 72 | 2 |
1.3%
|
|
| 75 | 6 |
4%
|
|
| 77 | 1 |
0.7%
|
|
| 80 | 36 |
24%
|
|
| 85 | 3 |
2%
|
|
| 90 | 17 |
11.3%
|
|
| 92 | 1 |
0.7%
|
|
| 95 | 5 |
3.3%
|
|
| 98 | 1 |
0.7%
|
|
| 100 | 11 |
7.3%
|