| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 17 |
44.7%
|
| 6 | 1 |
2.6%
|
|
| 7 | 1 |
2.6%
|
|
| 10 | 1 |
2.6%
|
|
| 20 | 3 |
7.9%
|
|
| 25 | 1 |
2.6%
|
|
| 30 | 3 |
7.9%
|
|
| 35 | 1 |
2.6%
|
|
| 40 | 3 |
7.9%
|
|
| 50 | 3 |
7.9%
|
|
| 65 | 1 |
2.6%
|
|
| 70 | 1 |
2.6%
|
|
| 80 | 1 |
2.6%
|
|
| 100 | 1 |
2.6%
|
|
| Sysmiss | 392 |