| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
0.9%
|
| 0 | 340 |
79.3%
|
|
| 1 | 1 |
0.2%
|
|
| 2 | 1 |
0.2%
|
|
| 5 | 5 |
1.2%
|
|
| 7 | 1 |
0.2%
|
|
| 10 | 11 |
2.6%
|
|
| 15 | 3 |
0.7%
|
|
| 20 | 22 |
5.1%
|
|
| 25 | 1 |
0.2%
|
|
| 28 | 1 |
0.2%
|
|
| 30 | 15 |
3.5%
|
|
| 40 | 8 |
1.9%
|
|
| 50 | 8 |
1.9%
|
|
| 60 | 3 |
0.7%
|
|
| 70 | 2 |
0.5%
|
|
| 80 | 2 |
0.5%
|
|
| 90 | 1 |
0.2%
|