| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 73 |
4.2%
|
| 0 | 1203 |
69.7%
|
|
| 5 | 19 |
1.1%
|
|
| 7 | 1 |
0.1%
|
|
| 8 | 1 |
0.1%
|
|
| 10 | 92 |
5.3%
|
|
| 15 | 31 |
1.8%
|
|
| 20 | 119 |
6.9%
|
|
| 25 | 19 |
1.1%
|
|
| 30 | 75 |
4.3%
|
|
| 35 | 5 |
0.3%
|
|
| 40 | 36 |
2.1%
|
|
| 50 | 37 |
2.1%
|
|
| 55 | 1 |
0.1%
|
|
| 60 | 5 |
0.3%
|
|
| 70 | 4 |
0.2%
|
|
| 80 | 3 |
0.2%
|
|
| 90 | 1 |
0.1%
|