| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 27 |
2.5%
|
| 0 | 12 |
1.1%
|
|
| 1 | 41 |
3.7%
|
|
| 2 | 86 |
7.8%
|
|
| 3 | 118 |
10.8%
|
|
| 4 | 154 |
14.1%
|
|
| 5 | 172 |
15.7%
|
|
| 6 | 155 |
14.1%
|
|
| 7 | 83 |
7.6%
|
|
| 8 | 110 |
10%
|
|
| 9 | 41 |
3.7%
|
|
| 10 | 33 |
3%
|
|
| 11 | 15 |
1.4%
|
|
| 12 | 22 |
2%
|
|
| 13 | 8 |
0.7%
|
|
| 14 | 11 |
1%
|
|
| 15 | 4 |
0.4%
|
|
| 16 | 1 |
0.1%
|
|
| 17 | 1 |
0.1%
|
|
| 20 | 1 |
0.1%
|
|
| 71 | 1 |
0.1%
|