| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 9 |
15.8%
|
| 3 | 1 |
1.8%
|
|
| 4 | 1 |
1.8%
|
|
| 5 | 3 |
5.3%
|
|
| 8 | 3 |
5.3%
|
|
| 9 | 1 |
1.8%
|
|
| 10 | 12 |
21.1%
|
|
| 12 | 1 |
1.8%
|
|
| 13 | 1 |
1.8%
|
|
| 15 | 6 |
10.5%
|
|
| 16 | 1 |
1.8%
|
|
| 20 | 5 |
8.8%
|
|
| 25 | 1 |
1.8%
|
|
| 30 | 4 |
7%
|
|
| 35 | 2 |
3.5%
|
|
| 40 | 4 |
7%
|
|
| 45 | 1 |
1.8%
|
|
| 50 | 1 |
1.8%
|
|
| Sysmiss | 116 |