| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 18151 | 
                                                                 
                                    
                                    96.8%
                                 
                                                             | 
                                                        
                    
| 1 | yes | 601 | 
                                                                 
                                    
                                    3.2%
                                 
                                                             | 
                                                        
                    
| 9 | 2 | 
                                                                 
                                    
                                    0%
                                 
                                                             |