| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 38 |
10.6%
|
| 0 | 227 |
63.2%
|
|
| 1 | 3 |
0.8%
|
|
| 2 | 1 |
0.3%
|
|
| 3 | 1 |
0.3%
|
|
| 5 | 7 |
1.9%
|
|
| 7 | 1 |
0.3%
|
|
| 8 | 1 |
0.3%
|
|
| 10 | 17 |
4.7%
|
|
| 15 | 6 |
1.7%
|
|
| 20 | 15 |
4.2%
|
|
| 23 | 1 |
0.3%
|
|
| 25 | 4 |
1.1%
|
|
| 30 | 11 |
3.1%
|
|
| 35 | 1 |
0.3%
|
|
| 40 | 4 |
1.1%
|
|
| 50 | 8 |
2.2%
|
|
| 60 | 2 |
0.6%
|
|
| 67 | 1 |
0.3%
|
|
| 70 | 1 |
0.3%
|
|
| 80 | 1 |
0.3%
|
|
| 84 | 1 |
0.3%
|
|
| 90 | 3 |
0.8%
|
|
| 100 | 4 |
1.1%
|