| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 8149 | 
                                    
                                    98.9%
                                 | 
| 1 | yes | 23 | 
                                    
                                    0.3%
                                 | 
| 8 | dk | 59 | 
                                    
                                    0.7%
                                 | 
| 9 | 8 | 
                                    
                                    0.1%
                                 |