| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 35 |
12.9%
|
| 0 | 36 |
13.2%
|
|
| 3 | 1 |
0.4%
|
|
| 7 | 1 |
0.4%
|
|
| 10 | 6 |
2.2%
|
|
| 15 | 1 |
0.4%
|
|
| 20 | 6 |
2.2%
|
|
| 25 | 2 |
0.7%
|
|
| 30 | 23 |
8.5%
|
|
| 35 | 3 |
1.1%
|
|
| 40 | 11 |
4%
|
|
| 50 | 33 |
12.1%
|
|
| 60 | 25 |
9.2%
|
|
| 70 | 23 |
8.5%
|
|
| 75 | 1 |
0.4%
|
|
| 80 | 16 |
5.9%
|
|
| 85 | 2 |
0.7%
|
|
| 90 | 10 |
3.7%
|
|
| 95 | 2 |
0.7%
|
|
| 100 | 35 |
12.9%
|
|
| Sysmiss | 260 |