| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.2%
|
| 0 | 6 |
1.2%
|
|
| 5 | 4 |
0.8%
|
|
| 10 | 19 |
3.7%
|
|
| 15 | 3 |
0.6%
|
|
| 17 | 1 |
0.2%
|
|
| 20 | 39 |
7.5%
|
|
| 25 | 3 |
0.6%
|
|
| 30 | 49 |
9.4%
|
|
| 35 | 5 |
1%
|
|
| 40 | 57 |
11%
|
|
| 45 | 16 |
3.1%
|
|
| 50 | 55 |
10.6%
|
|
| 55 | 3 |
0.6%
|
|
| 60 | 62 |
11.9%
|
|
| 65 | 16 |
3.1%
|
|
| 70 | 32 |
6.2%
|
|
| 75 | 9 |
1.7%
|
|
| 80 | 47 |
9.1%
|
|
| 85 | 1 |
0.2%
|
|
| 90 | 25 |
4.8%
|
|
| 95 | 1 |
0.2%
|
|
| 100 | 65 |
12.5%
|