| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
1.7%
|
| 0 | 99 |
82.5%
|
|
| 6 | 1 |
0.8%
|
|
| 8 | 1 |
0.8%
|
|
| 10 | 3 |
2.5%
|
|
| 20 | 1 |
0.8%
|
|
| 30 | 1 |
0.8%
|
|
| 50 | 6 |
5%
|
|
| 70 | 1 |
0.8%
|
|
| 80 | 1 |
0.8%
|
|
| 90 | 1 |
0.8%
|
|
| 100 | 3 |
2.5%
|