| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 28 |
14.5%
|
| 7 | 32 |
16.6%
|
|
| 8 | 3 |
1.6%
|
|
| 9 | 2 |
1%
|
|
| 10 | 17 |
8.8%
|
|
| 12 | 4 |
2.1%
|
|
| 13 | 1 |
0.5%
|
|
| 14 | 18 |
9.3%
|
|
| 15 | 14 |
7.3%
|
|
| 18 | 1 |
0.5%
|
|
| 20 | 6 |
3.1%
|
|
| 21 | 8 |
4.1%
|
|
| 25 | 4 |
2.1%
|
|
| 28 | 1 |
0.5%
|
|
| 30 | 33 |
17.1%
|
|
| 35 | 3 |
1.6%
|
|
| 38 | 1 |
0.5%
|
|
| 40 | 1 |
0.5%
|
|
| 45 | 9 |
4.7%
|
|
| 50 | 1 |
0.5%
|
|
| 60 | 6 |
3.1%
|
|
| Sysmiss | 2504 |