| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 7556 | 
                                    
                                    91.7%
                                 | 
| 1 | yes | 677 | 
                                    
                                    8.2%
                                 | 
| 9 | 6 | 
                                    
                                    0.1%
                                 |