| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
2.6%
|
| 0 | 213 |
91.4%
|
|
| 1 | 1 |
0.4%
|
|
| 2 | 1 |
0.4%
|
|
| 5 | 4 |
1.7%
|
|
| 10 | 2 |
0.9%
|
|
| 15 | 1 |
0.4%
|
|
| 20 | 1 |
0.4%
|
|
| 35 | 1 |
0.4%
|
|
| 65 | 1 |
0.4%
|
|
| 70 | 1 |
0.4%
|
|
| 100 | 1 |
0.4%
|