| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 11 |
5.2%
|
| 0 | 1 |
0.5%
|
|
| 1 | 2 |
0.9%
|
|
| 2 | 7 |
3.3%
|
|
| 3 | 3 |
1.4%
|
|
| 4 | 2 |
0.9%
|
|
| 5 | 15 |
7.1%
|
|
| 6 | 1 |
0.5%
|
|
| 8 | 1 |
0.5%
|
|
| 10 | 23 |
10.8%
|
|
| 15 | 10 |
4.7%
|
|
| 20 | 30 |
14.2%
|
|
| 25 | 9 |
4.2%
|
|
| 30 | 18 |
8.5%
|
|
| 35 | 6 |
2.8%
|
|
| 40 | 8 |
3.8%
|
|
| 45 | 2 |
0.9%
|
|
| 50 | 35 |
16.5%
|
|
| 55 | 2 |
0.9%
|
|
| 60 | 3 |
1.4%
|
|
| 65 | 1 |
0.5%
|
|
| 70 | 8 |
3.8%
|
|
| 75 | 3 |
1.4%
|
|
| 80 | 4 |
1.9%
|
|
| 90 | 1 |
0.5%
|
|
| 95 | 1 |
0.5%
|
|
| 100 | 4 |
1.9%
|
|
| 150 | 1 |
0.5%
|
|
| Sysmiss | 389 |