| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 39 |
6.5%
|
| 2 | 16 |
2.7%
|
|
| 3 | 53 |
8.9%
|
|
| 4 | 33 |
5.5%
|
|
| 5 | 44 |
7.4%
|
|
| 6 | 23 |
3.8%
|
|
| 7 | 22 |
3.7%
|
|
| 8 | 26 |
4.3%
|
|
| 9 | 23 |
3.8%
|
|
| 10 | 70 |
11.7%
|
|
| 11 | 11 |
1.8%
|
|
| 12 | 24 |
4%
|
|
| 13 | 13 |
2.2%
|
|
| 14 | 17 |
2.8%
|
|
| 15 | 49 |
8.2%
|
|
| 16 | 14 |
2.3%
|
|
| 17 | 9 |
1.5%
|
|
| 18 | 41 |
6.9%
|
|
| 19 | 17 |
2.8%
|
|
| 20 | 54 |
9%
|