| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 359 |
26.2%
|
| 0 | 374 |
27.3%
|
|
| 1 | 2 |
0.1%
|
|
| 2 | 1 |
0.1%
|
|
| 3 | 1 |
0.1%
|
|
| 5 | 10 |
0.7%
|
|
| 8 | 1 |
0.1%
|
|
| 10 | 51 |
3.7%
|
|
| 15 | 16 |
1.2%
|
|
| 20 | 112 |
8.2%
|
|
| 25 | 26 |
1.9%
|
|
| 26 | 1 |
0.1%
|
|
| 30 | 87 |
6.4%
|
|
| 35 | 9 |
0.7%
|
|
| 36 | 1 |
0.1%
|
|
| 40 | 45 |
3.3%
|
|
| 45 | 2 |
0.1%
|
|
| 50 | 76 |
5.6%
|
|
| 55 | 1 |
0.1%
|
|
| 58 | 1 |
0.1%
|
|
| 60 | 29 |
2.1%
|
|
| 65 | 3 |
0.2%
|
|
| 70 | 17 |
1.2%
|
|
| 75 | 3 |
0.2%
|
|
| 80 | 57 |
4.2%
|
|
| 85 | 3 |
0.2%
|
|
| 90 | 33 |
2.4%
|
|
| 95 | 10 |
0.7%
|
|
| 98 | 1 |
0.1%
|
|
| 99 | 6 |
0.4%
|
|
| 100 | 31 |
2.3%
|