| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 452 |
34.2%
|
| -4 | Too many to count | 377 |
28.5%
|
| 0 | 2 |
0.2%
|
|
| 1 | 27 |
2%
|
|
| 2 | 174 |
13.2%
|
|
| 3 | 189 |
14.3%
|
|
| 4 | 46 |
3.5%
|
|
| 5 | 37 |
2.8%
|
|
| 6 | 9 |
0.7%
|
|
| 7 | 1 |
0.1%
|
|
| 8 | 1 |
0.1%
|
|
| 10 | 6 |
0.5%
|
|
| 15 | 1 |
0.1%
|