| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 805 |
61.4%
|
| 0 | 456 |
34.8%
|
|
| 1 | 2 |
0.2%
|
|
| 2 | 3 |
0.2%
|
|
| 3 | 4 |
0.3%
|
|
| 4 | 3 |
0.2%
|
|
| 5 | 5 |
0.4%
|
|
| 6 | 7 |
0.5%
|
|
| 10 | 5 |
0.4%
|
|
| 12 | 5 |
0.4%
|
|
| 20 | 3 |
0.2%
|
|
| 25 | 1 |
0.1%
|
|
| 30 | 2 |
0.2%
|
|
| 40 | 1 |
0.1%
|
|
| 50 | 1 |
0.1%
|
|
| 80 | 1 |
0.1%
|
|
| 120 | 1 |
0.1%
|
|
| 150 | 1 |
0.1%
|
|
| 200 | 1 |
0.1%
|
|
| 500 | 1 |
0.1%
|
|
| 1500 | 1 |
0.1%
|
|
| 6000 | 1 |
0.1%
|
|
| 1000000 | 1 |
0.1%
|
|
| Sysmiss | 58 |