| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 2292 | 
                                                                 
                                    
                                    92.3%
                                 
                                                             | 
                                                        
                    
| 1 | yes | 160 | 
                                                                 
                                    
                                    6.4%
                                 
                                                             | 
                                                        
                    
| 9 | 30 | 
                                                                 
                                    
                                    1.2%
                                 
                                                             | 
                                                        
                    |
| 11 | .Z | 5750 |