| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 29 |
4.9%
|
| 1 | 23 |
3.9%
|
|
| 2 | 20 |
3.4%
|
|
| 3 | 37 |
6.3%
|
|
| 4 | 5 |
0.8%
|
|
| 5 | 50 |
8.4%
|
|
| 6 | 22 |
3.7%
|
|
| 7 | 180 |
30.4%
|
|
| 8 | 10 |
1.7%
|
|
| 9 | 1 |
0.2%
|
|
| 10 | 55 |
9.3%
|
|
| 12 | 2 |
0.3%
|
|
| 14 | 23 |
3.9%
|
|
| 15 | 42 |
7.1%
|
|
| 17 | 1 |
0.2%
|
|
| 20 | 29 |
4.9%
|
|
| 21 | 4 |
0.7%
|
|
| 25 | 1 |
0.2%
|
|
| 30 | 44 |
7.4%
|
|
| 40 | 1 |
0.2%
|
|
| 45 | 1 |
0.2%
|
|
| 60 | 9 |
1.5%
|
|
| 73 | 1 |
0.2%
|
|
| 90 | 2 |
0.3%
|
|
| Sysmiss | 926 |