| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 9 |
8.1%
|
| -4 | Too many to count | 50 |
45%
|
| 0 | 1 |
0.9%
|
|
| 1 | 2 |
1.8%
|
|
| 2 | 8 |
7.2%
|
|
| 3 | 12 |
10.8%
|
|
| 4 | 7 |
6.3%
|
|
| 5 | 5 |
4.5%
|
|
| 6 | 1 |
0.9%
|
|
| 7 | 2 |
1.8%
|
|
| 8 | 3 |
2.7%
|
|
| 10 | 4 |
3.6%
|
|
| 12 | 3 |
2.7%
|
|
| 15 | 1 |
0.9%
|
|
| 20 | 1 |
0.9%
|
|
| 50 | 1 |
0.9%
|
|
| 60 | 1 |
0.9%
|