| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 167 |
15.2%
|
| 0 | 171 |
15.6%
|
|
| 2 | 1 |
0.1%
|
|
| 10 | 2 |
0.2%
|
|
| 15 | 1 |
0.1%
|
|
| 20 | 6 |
0.5%
|
|
| 30 | 13 |
1.2%
|
|
| 34 | 1 |
0.1%
|
|
| 40 | 12 |
1.1%
|
|
| 45 | 2 |
0.2%
|
|
| 50 | 46 |
4.2%
|
|
| 58 | 1 |
0.1%
|
|
| 60 | 25 |
2.3%
|
|
| 70 | 16 |
1.5%
|
|
| 80 | 28 |
2.6%
|
|
| 90 | 6 |
0.5%
|
|
| 98 | 1 |
0.1%
|
|
| 100 | 597 |
54.5%
|