| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.2%
|
| 0 | 42 |
8.1%
|
|
| 10 | 4 |
0.8%
|
|
| 15 | 1 |
0.2%
|
|
| 20 | 21 |
4%
|
|
| 25 | 5 |
1%
|
|
| 30 | 36 |
6.9%
|
|
| 40 | 16 |
3.1%
|
|
| 45 | 5 |
1%
|
|
| 50 | 51 |
9.8%
|
|
| 55 | 1 |
0.2%
|
|
| 60 | 42 |
8.1%
|
|
| 65 | 3 |
0.6%
|
|
| 70 | 42 |
8.1%
|
|
| 75 | 5 |
1%
|
|
| 80 | 62 |
11.9%
|
|
| 85 | 6 |
1.2%
|
|
| 90 | 71 |
13.7%
|
|
| 95 | 4 |
0.8%
|
|
| 98 | 1 |
0.2%
|
|
| 100 | 100 |
19.3%
|