| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 2550 |
13.9%
|
| 1 | yes | 13562 |
73.7%
|
| 8 | dk | 2279 |
12.4%
|
| 9 | 2 |
0%
|
|
| 11 | .Z | 361 |