| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 308 | 
                                    
                                    10.3%
                                 | 
| 2 | no | 2656 | 
                                    
                                    88.5%
                                 | 
| 3 | (dk) | 29 | 
                                    
                                    1%
                                 | 
| 4 | (ref) | 7 | 
                                    
                                    0.2%
                                 |