| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 27 |
29.3%
|
| 9 | 1 |
1.1%
|
|
| 30 | 1 |
1.1%
|
|
| 40 | 1 |
1.1%
|
|
| 55 | 1 |
1.1%
|
|
| 60 | 10 |
10.9%
|
|
| 65 | 1 |
1.1%
|
|
| 70 | 8 |
8.7%
|
|
| 75 | 4 |
4.3%
|
|
| 80 | 23 |
25%
|
|
| 85 | 6 |
6.5%
|
|
| 90 | 3 |
3.3%
|
|
| 100 | 6 |
6.5%
|
|
| Sysmiss | 506 |