| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 178 |
11.3%
|
| 0 | 143 |
9.1%
|
|
| 10 | 3 |
0.2%
|
|
| 12 | 1 |
0.1%
|
|
| 15 | 3 |
0.2%
|
|
| 20 | 11 |
0.7%
|
|
| 25 | 1 |
0.1%
|
|
| 30 | 25 |
1.6%
|
|
| 33 | 1 |
0.1%
|
|
| 35 | 2 |
0.1%
|
|
| 40 | 37 |
2.4%
|
|
| 45 | 1 |
0.1%
|
|
| 50 | 136 |
8.6%
|
|
| 55 | 1 |
0.1%
|
|
| 60 | 69 |
4.4%
|
|
| 65 | 9 |
0.6%
|
|
| 70 | 57 |
3.6%
|
|
| 75 | 17 |
1.1%
|
|
| 77 | 1 |
0.1%
|
|
| 80 | 94 |
6%
|
|
| 85 | 13 |
0.8%
|
|
| 86 | 1 |
0.1%
|
|
| 90 | 50 |
3.2%
|
|
| 94 | 1 |
0.1%
|
|
| 95 | 8 |
0.5%
|
|
| 100 | 710 |
45.1%
|