| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 140 |
13.9%
|
| 0 | 123 |
12.2%
|
|
| 1 | 2 |
0.2%
|
|
| 2 | 2 |
0.2%
|
|
| 3 | 1 |
0.1%
|
|
| 4 | 2 |
0.2%
|
|
| 5 | 2 |
0.2%
|
|
| 10 | 157 |
15.6%
|
|
| 12 | 10 |
1%
|
|
| 15 | 62 |
6.2%
|
|
| 16 | 2 |
0.2%
|
|
| 18 | 1 |
0.1%
|
|
| 20 | 92 |
9.1%
|
|
| 23 | 1 |
0.1%
|
|
| 25 | 17 |
1.7%
|
|
| 30 | 117 |
11.6%
|
|
| 35 | 3 |
0.3%
|
|
| 40 | 17 |
1.7%
|
|
| 45 | 1 |
0.1%
|
|
| 50 | 146 |
14.5%
|
|
| 60 | 18 |
1.8%
|
|
| 65 | 1 |
0.1%
|
|
| 70 | 25 |
2.5%
|
|
| 75 | 7 |
0.7%
|
|
| 80 | 33 |
3.3%
|
|
| 85 | 1 |
0.1%
|
|
| 90 | 17 |
1.7%
|
|
| 92 | 1 |
0.1%
|
|
| 95 | 7 |
0.7%
|