| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | 205 |
82%
|
|
| 5 | 3 |
1.2%
|
|
| 10 | 15 |
6%
|
|
| 15 | 10 |
4%
|
|
| 20 | 13 |
5.2%
|
|
| 25 | 2 |
0.8%
|
|
| 35 | 1 |
0.4%
|
|
| 60 | 1 |
0.4%
|