| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 97 |
16.1%
|
| 0 | 182 |
30.3%
|
|
| 5 | 2 |
0.3%
|
|
| 10 | 5 |
0.8%
|
|
| 15 | 9 |
1.5%
|
|
| 20 | 43 |
7.2%
|
|
| 25 | 29 |
4.8%
|
|
| 30 | 28 |
4.7%
|
|
| 35 | 17 |
2.8%
|
|
| 40 | 40 |
6.7%
|
|
| 45 | 7 |
1.2%
|
|
| 50 | 45 |
7.5%
|
|
| 55 | 2 |
0.3%
|
|
| 60 | 16 |
2.7%
|
|
| 65 | 1 |
0.2%
|
|
| 70 | 19 |
3.2%
|
|
| 75 | 2 |
0.3%
|
|
| 80 | 27 |
4.5%
|
|
| 90 | 11 |
1.8%
|
|
| 100 | 19 |
3.2%
|