| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 |
2.9%
|
| 2 | 1 |
1%
|
|
| 3 | 1 |
1%
|
|
| 5 | 3 |
2.9%
|
|
| 7 | 13 |
12.6%
|
|
| 10 | 4 |
3.9%
|
|
| 14 | 11 |
10.7%
|
|
| 15 | 2 |
1.9%
|
|
| 20 | 4 |
3.9%
|
|
| 21 | 5 |
4.9%
|
|
| 30 | 25 |
24.3%
|
|
| 45 | 10 |
9.7%
|
|
| 50 | 1 |
1%
|
|
| 60 | 9 |
8.7%
|
|
| 90 | 8 |
7.8%
|
|
| 120 | 1 |
1%
|
|
| 210 | 1 |
1%
|
|
| 270 | 1 |
1%
|
|
| Sysmiss | 299 |