| Value | Category | Cases | |
|---|---|---|---|
| 0 | 391 | 
                                    
                                    4.7%
                                 | |
| 1 | 633 | 
                                    
                                    7.7%
                                 | |
| Missing value | 7221 | 
                                    
                                    87.6%
                                 |