| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 1490 |
18.4%
|
| 1 | yes | 5585 |
68.8%
|
| 8 | dk | 1036 |
12.8%
|
| 9 | 2 |
0%
|
|
| 11 | .Z | 126 |