| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 45 |
10.7%
|
| 0 | 116 |
27.6%
|
|
| 9 | 1 |
0.2%
|
|
| 10 | 7 |
1.7%
|
|
| 12 | 1 |
0.2%
|
|
| 15 | 3 |
0.7%
|
|
| 18 | 1 |
0.2%
|
|
| 20 | 20 |
4.8%
|
|
| 22 | 1 |
0.2%
|
|
| 25 | 12 |
2.9%
|
|
| 30 | 23 |
5.5%
|
|
| 35 | 3 |
0.7%
|
|
| 40 | 24 |
5.7%
|
|
| 42 | 1 |
0.2%
|
|
| 45 | 4 |
1%
|
|
| 50 | 24 |
5.7%
|
|
| 55 | 2 |
0.5%
|
|
| 60 | 24 |
5.7%
|
|
| 65 | 2 |
0.5%
|
|
| 67 | 1 |
0.2%
|
|
| 70 | 14 |
3.3%
|
|
| 75 | 2 |
0.5%
|
|
| 77 | 1 |
0.2%
|
|
| 80 | 18 |
4.3%
|
|
| 85 | 3 |
0.7%
|
|
| 86 | 1 |
0.2%
|
|
| 90 | 11 |
2.6%
|
|
| 98 | 2 |
0.5%
|
|
| 99 | 4 |
1%
|
|
| 100 | 50 |
11.9%
|
|
| Sysmiss | 224 |