| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
3.8%
|
| 0 | 65 |
41.4%
|
|
| 1 | 4 |
2.5%
|
|
| 2 | 2 |
1.3%
|
|
| 3 | 1 |
0.6%
|
|
| 5 | 4 |
2.5%
|
|
| 10 | 6 |
3.8%
|
|
| 15 | 2 |
1.3%
|
|
| 20 | 14 |
8.9%
|
|
| 30 | 10 |
6.4%
|
|
| 40 | 8 |
5.1%
|
|
| 50 | 8 |
5.1%
|
|
| 60 | 9 |
5.7%
|
|
| 65 | 1 |
0.6%
|
|
| 70 | 6 |
3.8%
|
|
| 80 | 7 |
4.5%
|
|
| 90 | 4 |
2.5%
|