| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 142 |
40.8%
|
| 0 | 162 |
46.6%
|
|
| 2 | 1 |
0.3%
|
|
| 3 | 3 |
0.9%
|
|
| 5 | 2 |
0.6%
|
|
| 7 | 1 |
0.3%
|
|
| 8 | 3 |
0.9%
|
|
| 9 | 1 |
0.3%
|
|
| 10 | 8 |
2.3%
|
|
| 15 | 1 |
0.3%
|
|
| 16 | 1 |
0.3%
|
|
| 18 | 1 |
0.3%
|
|
| 20 | 2 |
0.6%
|
|
| 24 | 2 |
0.6%
|
|
| 25 | 5 |
1.4%
|
|
| 50 | 3 |
0.9%
|
|
| 75 | 1 |
0.3%
|
|
| 83 | 1 |
0.3%
|
|
| 100 | 1 |
0.3%
|
|
| 170 | 1 |
0.3%
|
|
| 200 | 2 |
0.6%
|
|
| 400 | 1 |
0.3%
|
|
| 600 | 1 |
0.3%
|
|
| 16000 | 1 |
0.3%
|
|
| 17000 | 1 |
0.3%
|
|
| Sysmiss | 14 |