| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | 28 |
14.1%
|
|
| 2 | 1 |
0.5%
|
|
| 5 | 1 |
0.5%
|
|
| 10 | 5 |
2.5%
|
|
| 15 | 1 |
0.5%
|
|
| 20 | 12 |
6.1%
|
|
| 25 | 2 |
1%
|
|
| 30 | 11 |
5.6%
|
|
| 38 | 1 |
0.5%
|
|
| 40 | 2 |
1%
|
|
| 45 | 1 |
0.5%
|
|
| 47 | 1 |
0.5%
|
|
| 50 | 23 |
11.6%
|
|
| 60 | 5 |
2.5%
|
|
| 70 | 6 |
3%
|
|
| 74 | 1 |
0.5%
|
|
| 75 | 2 |
1%
|
|
| 80 | 11 |
5.6%
|
|
| 84 | 1 |
0.5%
|
|
| 85 | 1 |
0.5%
|
|
| 90 | 5 |
2.5%
|
|
| 95 | 1 |
0.5%
|
|
| 100 | 76 |
38.4%
|
|
| Sysmiss | 147 |