| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 183 |
13.9%
|
| -4 | Too many to count | 919 |
69.8%
|
| 0 | 5 |
0.4%
|
|
| 1 | 6 |
0.5%
|
|
| 2 | 13 |
1%
|
|
| 3 | 33 |
2.5%
|
|
| 4 | 45 |
3.4%
|
|
| 5 | 41 |
3.1%
|
|
| 6 | 11 |
0.8%
|
|
| 7 | 2 |
0.2%
|
|
| 8 | 4 |
0.3%
|
|
| 10 | 16 |
1.2%
|
|
| 12 | 1 |
0.1%
|
|
| 15 | 5 |
0.4%
|
|
| 20 | 11 |
0.8%
|
|
| 30 | 5 |
0.4%
|
|
| 40 | 1 |
0.1%
|
|
| 50 | 5 |
0.4%
|
|
| 72 | 1 |
0.1%
|
|
| 100 | 5 |
0.4%
|
|
| 120 | 1 |
0.1%
|
|
| 500 | 1 |
0.1%
|
|
| 1000 | 2 |
0.2%
|
|
| 1650 | 1 |
0.1%
|
|
| Sysmiss | 99 |