| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 21 |
13.5%
|
| 1 | 7 |
4.5%
|
|
| 2 | 4 |
2.6%
|
|
| 3 | 3 |
1.9%
|
|
| 4 | 1 |
0.6%
|
|
| 5 | 9 |
5.8%
|
|
| 8 | 1 |
0.6%
|
|
| 10 | 10 |
6.4%
|
|
| 15 | 14 |
9%
|
|
| 20 | 8 |
5.1%
|
|
| 25 | 1 |
0.6%
|
|
| 30 | 59 |
37.8%
|
|
| 40 | 2 |
1.3%
|
|
| 45 | 10 |
6.4%
|
|
| 50 | 2 |
1.3%
|
|
| 59 | 4 |
2.6%
|
|
| Sysmiss | 846 |