| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
3.5%
|
| 3 | 2 |
1.8%
|
|
| 4 | 2 |
1.8%
|
|
| 5 | 5 |
4.4%
|
|
| 7 | 24 |
21.2%
|
|
| 9 | 1 |
0.9%
|
|
| 10 | 14 |
12.4%
|
|
| 11 | 1 |
0.9%
|
|
| 12 | 2 |
1.8%
|
|
| 14 | 9 |
8%
|
|
| 15 | 5 |
4.4%
|
|
| 20 | 5 |
4.4%
|
|
| 21 | 3 |
2.7%
|
|
| 25 | 1 |
0.9%
|
|
| 30 | 19 |
16.8%
|
|
| 45 | 2 |
1.8%
|
|
| 60 | 8 |
7.1%
|
|
| 80 | 1 |
0.9%
|
|
| 90 | 1 |
0.9%
|
|
| 120 | 2 |
1.8%
|
|
| 180 | 1 |
0.9%
|
|
| 450 | 1 |
0.9%
|
|
| Sysmiss | 479 |