| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 10 | 3 |
1.4%
|
|
| 15 | 2 |
0.9%
|
|
| 20 | 5 |
2.4%
|
|
| 25 | 5 |
2.4%
|
|
| 30 | 8 |
3.8%
|
|
| 35 | 2 |
0.9%
|
|
| 40 | 16 |
7.6%
|
|
| 45 | 1 |
0.5%
|
|
| 50 | 28 |
13.3%
|
|
| 55 | 1 |
0.5%
|
|
| 60 | 24 |
11.4%
|
|
| 65 | 5 |
2.4%
|
|
| 70 | 21 |
10%
|
|
| 75 | 6 |
2.8%
|
|
| 77 | 1 |
0.5%
|
|
| 78 | 1 |
0.5%
|
|
| 80 | 24 |
11.4%
|
|
| 85 | 13 |
6.2%
|
|
| 88 | 2 |
0.9%
|
|
| 90 | 10 |
4.7%
|
|
| 93 | 1 |
0.5%
|
|
| 95 | 2 |
0.9%
|
|
| 100 | 30 |
14.2%
|
|
| Sysmiss | 371 |