| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 2605 | 
                                                                 
                                    
                                    90.6%
                                 
                                                             | 
                                                        
                    
| 1 | yes | 230 | 
                                                                 
                                    
                                    8%
                                 
                                                             | 
                                                        
                    
| 9 | 41 | 
                                                                 
                                    
                                    1.4%
                                 
                                                             | 
                                                        
                    |
| 11 | .Z | 15878 |