| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 |
1.4%
|
| 0 | 304 |
83.5%
|
|
| 1 | 1 |
0.3%
|
|
| 4 | 1 |
0.3%
|
|
| 10 | 7 |
1.9%
|
|
| 13 | 1 |
0.3%
|
|
| 15 | 1 |
0.3%
|
|
| 18 | 1 |
0.3%
|
|
| 20 | 8 |
2.2%
|
|
| 25 | 1 |
0.3%
|
|
| 30 | 8 |
2.2%
|
|
| 31 | 2 |
0.5%
|
|
| 40 | 6 |
1.6%
|
|
| 50 | 12 |
3.3%
|
|
| 60 | 1 |
0.3%
|
|
| 80 | 1 |
0.3%
|
|
| 100 | 4 |
1.1%
|