| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes, seen | 5156 | 
                                                                 
                                    
                                    54.7%
                                 
                                                             | 
                                                        
                    
| 2 | yes, not seen | 3404 | 
                                                                 
                                    
                                    36.1%
                                 
                                                             | 
                                                        
                    
| 3 | no | 873 | 
                                                                 
                                    
                                    9.3%
                                 
                                                             |