| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 125 |
20.8%
|
| 0 | 177 |
29.5%
|
|
| 10 | 7 |
1.2%
|
|
| 15 | 8 |
1.3%
|
|
| 20 | 38 |
6.3%
|
|
| 25 | 15 |
2.5%
|
|
| 30 | 41 |
6.8%
|
|
| 35 | 29 |
4.8%
|
|
| 40 | 44 |
7.3%
|
|
| 45 | 15 |
2.5%
|
|
| 50 | 43 |
7.2%
|
|
| 55 | 10 |
1.7%
|
|
| 60 | 11 |
1.8%
|
|
| 65 | 1 |
0.2%
|
|
| 70 | 11 |
1.8%
|
|
| 80 | 6 |
1%
|
|
| 85 | 1 |
0.2%
|
|
| 90 | 5 |
0.8%
|
|
| 100 | 14 |
2.3%
|