| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 29 |
21.5%
|
| -4 | Too many to count | 85 |
63%
|
| 0 | 1 |
0.7%
|
|
| 1 | 8 |
5.9%
|
|
| 2 | 5 |
3.7%
|
|
| 3 | 3 |
2.2%
|
|
| 20 | 1 |
0.7%
|
|
| 30 | 1 |
0.7%
|
|
| 100 | 1 |
0.7%
|
|
| 1500 | 1 |
0.7%
|