| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 17 |
13.8%
|
| 3 | 4 |
3.3%
|
|
| 8 | 1 |
0.8%
|
|
| 10 | 7 |
5.7%
|
|
| 15 | 3 |
2.4%
|
|
| 18 | 1 |
0.8%
|
|
| 20 | 3 |
2.4%
|
|
| 22 | 1 |
0.8%
|
|
| 25 | 4 |
3.3%
|
|
| 30 | 10 |
8.1%
|
|
| 40 | 3 |
2.4%
|
|
| 45 | 1 |
0.8%
|
|
| 50 | 12 |
9.8%
|
|
| 60 | 2 |
1.6%
|
|
| 65 | 1 |
0.8%
|
|
| 68 | 1 |
0.8%
|
|
| 70 | 3 |
2.4%
|
|
| 80 | 2 |
1.6%
|
|
| 86 | 1 |
0.8%
|
|
| 93 | 1 |
0.8%
|
|
| 99 | 1 |
0.8%
|
|
| 100 | 44 |
35.8%
|
|
| Sysmiss | 231 |