| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 7785 | 
                                    
                                    94.5%
                                 | 
| 1 | yes | 450 | 
                                    
                                    5.5%
                                 | 
| 9 | 4 | 
                                    
                                    0%
                                 |