| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 323 | 
                                    
                                    10.8%
                                 | 
| 2 | no | 2651 | 
                                    
                                    88.4%
                                 | 
| 3 | (dk) | 20 | 
                                    
                                    0.7%
                                 | 
| 4 | (ref) | 6 | 
                                    
                                    0.2%
                                 |