| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 25 |
4.2%
|
| 0 | 170 |
28.3%
|
|
| 2 | 1 |
0.2%
|
|
| 5 | 4 |
0.7%
|
|
| 10 | 17 |
2.8%
|
|
| 15 | 13 |
2.2%
|
|
| 20 | 33 |
5.5%
|
|
| 25 | 21 |
3.5%
|
|
| 30 | 19 |
3.2%
|
|
| 35 | 12 |
2%
|
|
| 40 | 29 |
4.8%
|
|
| 45 | 1 |
0.2%
|
|
| 50 | 28 |
4.7%
|
|
| 55 | 2 |
0.3%
|
|
| 60 | 30 |
5%
|
|
| 65 | 3 |
0.5%
|
|
| 70 | 26 |
4.3%
|
|
| 75 | 4 |
0.7%
|
|
| 80 | 34 |
5.7%
|
|
| 85 | 6 |
1%
|
|
| 90 | 54 |
9%
|
|
| 95 | 6 |
1%
|
|
| 97 | 2 |
0.3%
|
|
| 99 | 1 |
0.2%
|
|
| 100 | 60 |
10%
|