| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 659 | 
                                                                 
                                    
                                    87.2%
                                 
                                                             | 
                                                        
                    
| 1 | yes | 77 | 
                                                                 
                                    
                                    10.2%
                                 
                                                             | 
                                                        
                    
| 9 | 20 | 
                                                                 
                                    
                                    2.6%
                                 
                                                             | 
                                                        
                    |
| 11 | .Z | 17998 |