| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
4%
|
| 0 | 5 |
3.3%
|
|
| 2 | 1 |
0.7%
|
|
| 3 | 1 |
0.7%
|
|
| 5 | 4 |
2.7%
|
|
| 10 | 6 |
4%
|
|
| 15 | 1 |
0.7%
|
|
| 20 | 16 |
10.7%
|
|
| 25 | 5 |
3.3%
|
|
| 28 | 1 |
0.7%
|
|
| 30 | 6 |
4%
|
|
| 40 | 6 |
4%
|
|
| 50 | 18 |
12%
|
|
| 60 | 6 |
4%
|
|
| 65 | 1 |
0.7%
|
|
| 70 | 7 |
4.7%
|
|
| 75 | 1 |
0.7%
|
|
| 80 | 8 |
5.3%
|
|
| 90 | 8 |
5.3%
|
|
| 95 | 2 |
1.3%
|
|
| 97 | 1 |
0.7%
|
|
| 98 | 3 |
2%
|
|
| 99 | 3 |
2%
|
|
| 100 | 34 |
22.7%
|