| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 17 |
2.4%
|
| 0 | 513 |
71.9%
|
|
| 2 | 1 |
0.1%
|
|
| 5 | 5 |
0.7%
|
|
| 10 | 33 |
4.6%
|
|
| 15 | 4 |
0.6%
|
|
| 20 | 59 |
8.3%
|
|
| 25 | 5 |
0.7%
|
|
| 27 | 1 |
0.1%
|
|
| 30 | 25 |
3.5%
|
|
| 40 | 18 |
2.5%
|
|
| 45 | 1 |
0.1%
|
|
| 50 | 16 |
2.2%
|
|
| 55 | 1 |
0.1%
|
|
| 60 | 5 |
0.7%
|
|
| 70 | 4 |
0.6%
|
|
| 80 | 1 |
0.1%
|
|
| 90 | 3 |
0.4%
|
|
| 100 | 1 |
0.1%
|