| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 293 |
21.4%
|
| 0 | 711 |
51.9%
|
|
| 2 | 2 |
0.1%
|
|
| 5 | 21 |
1.5%
|
|
| 8 | 1 |
0.1%
|
|
| 10 | 59 |
4.3%
|
|
| 15 | 13 |
0.9%
|
|
| 20 | 89 |
6.5%
|
|
| 25 | 18 |
1.3%
|
|
| 30 | 50 |
3.7%
|
|
| 35 | 5 |
0.4%
|
|
| 40 | 21 |
1.5%
|
|
| 45 | 1 |
0.1%
|
|
| 50 | 33 |
2.4%
|
|
| 60 | 4 |
0.3%
|
|
| 65 | 1 |
0.1%
|
|
| 70 | 10 |
0.7%
|
|
| 80 | 21 |
1.5%
|
|
| 90 | 11 |
0.8%
|
|
| 95 | 1 |
0.1%
|
|
| 99 | 1 |
0.1%
|
|
| 100 | 3 |
0.2%
|