| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 17 |
6.7%
|
| 1 | 1 |
0.4%
|
|
| 2 | 3 |
1.2%
|
|
| 5 | 3 |
1.2%
|
|
| 6 | 2 |
0.8%
|
|
| 10 | 7 |
2.7%
|
|
| 15 | 1 |
0.4%
|
|
| 20 | 7 |
2.7%
|
|
| 25 | 9 |
3.5%
|
|
| 26 | 1 |
0.4%
|
|
| 30 | 12 |
4.7%
|
|
| 35 | 2 |
0.8%
|
|
| 40 | 3 |
1.2%
|
|
| 45 | 1 |
0.4%
|
|
| 48 | 1 |
0.4%
|
|
| 50 | 4 |
1.6%
|
|
| 55 | 1 |
0.4%
|
|
| 60 | 4 |
1.6%
|
|
| 80 | 1 |
0.4%
|
|
| 98 | 1 |
0.4%
|
|
| 100 | 174 |
68.2%
|
|
| Sysmiss | 770 |