| Value | Category | Cases | |
|---|---|---|---|
| -9 | refused to answer | 0 |
0%
|
| -8 | don't know | 0 |
0%
|
| 0 | 194 |
89.8%
|
|
| 2 | 1 |
0.5%
|
|
| 10 | 1 |
0.5%
|
|
| 15 | 2 |
0.9%
|
|
| 20 | 10 |
4.6%
|
|
| 25 | 1 |
0.5%
|
|
| 30 | 3 |
1.4%
|
|
| 40 | 1 |
0.5%
|
|
| 42 | 1 |
0.5%
|
|
| 50 | 1 |
0.5%
|
|
| 65 | 1 |
0.5%
|