| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 10 |
10.3%
|
| 1 | 2 |
2.1%
|
|
| 2 | 2 |
2.1%
|
|
| 3 | 1 |
1%
|
|
| 5 | 2 |
2.1%
|
|
| 6 | 1 |
1%
|
|
| 8 | 3 |
3.1%
|
|
| 9 | 1 |
1%
|
|
| 10 | 2 |
2.1%
|
|
| 11 | 3 |
3.1%
|
|
| 12 | 70 |
72.2%
|