| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 37 |
38.1%
|
| -8 | Refusal (spontaneous) | 17 |
17.5%
|
| 0 | 8 |
8.2%
|
|
| 5 | 3 |
3.1%
|
|
| 10 | 2 |
2.1%
|
|
| 15 | 1 |
1%
|
|
| 20 | 4 |
4.1%
|
|
| 21 | 1 |
1%
|
|
| 25 | 1 |
1%
|
|
| 30 | 3 |
3.1%
|
|
| 35 | 1 |
1%
|
|
| 40 | 3 |
3.1%
|
|
| 45 | 1 |
1%
|
|
| 50 | 7 |
7.2%
|
|
| 55 | 1 |
1%
|
|
| 65 | 1 |
1%
|
|
| 90 | 1 |
1%
|
|
| 100 | 5 |
5.2%
|