| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 43 |
23%
|
| 0 | 2 |
1.1%
|
|
| 1 | 7 |
3.7%
|
|
| 2 | 15 |
8%
|
|
| 3 | 17 |
9.1%
|
|
| 4 | 15 |
8%
|
|
| 5 | 41 |
21.9%
|
|
| 6 | 14 |
7.5%
|
|
| 8 | 4 |
2.1%
|
|
| 10 | 5 |
2.7%
|
|
| 12 | 1 |
0.5%
|
|
| 15 | 10 |
5.3%
|
|
| 20 | 6 |
3.2%
|
|
| 22 | 1 |
0.5%
|
|
| 25 | 4 |
2.1%
|
|
| 30 | 1 |
0.5%
|
|
| 2005 | 1 |
0.5%
|
|
| Sysmiss | 811 |