| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 55 |
15.6%
|
| 0 | 194 |
55.1%
|
|
| 5 | 1 |
0.3%
|
|
| 10 | 9 |
2.6%
|
|
| 13 | 3 |
0.9%
|
|
| 15 | 5 |
1.4%
|
|
| 17 | 1 |
0.3%
|
|
| 20 | 8 |
2.3%
|
|
| 25 | 4 |
1.1%
|
|
| 30 | 11 |
3.1%
|
|
| 35 | 2 |
0.6%
|
|
| 40 | 5 |
1.4%
|
|
| 45 | 1 |
0.3%
|
|
| 50 | 13 |
3.7%
|
|
| 52 | 1 |
0.3%
|
|
| 60 | 4 |
1.1%
|
|
| 68 | 1 |
0.3%
|
|
| 70 | 9 |
2.6%
|
|
| 80 | 6 |
1.7%
|
|
| 90 | 4 |
1.1%
|
|
| 100 | 15 |
4.3%
|