| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 39 |
2.9%
|
| 0 | 1189 |
89.9%
|
|
| 1 | 1 |
0.1%
|
|
| 2 | 1 |
0.1%
|
|
| 3 | 2 |
0.2%
|
|
| 5 | 15 |
1.1%
|
|
| 6 | 2 |
0.2%
|
|
| 10 | 33 |
2.5%
|
|
| 15 | 9 |
0.7%
|
|
| 20 | 20 |
1.5%
|
|
| 25 | 2 |
0.2%
|
|
| 30 | 5 |
0.4%
|
|
| 40 | 2 |
0.2%
|
|
| 50 | 1 |
0.1%
|
|
| 100 | 2 |
0.2%
|