| Value | Category | Cases | |
|---|---|---|---|
| a | 78 | 
                                                                 
                                    
                                    9.3%
                                 
                                                             | 
                                                        
                    |
| b | 453 | 
                                                                 
                                    
                                    54.1%
                                 
                                                             | 
                                                        
                    |
| c | 35 | 
                                                                 
                                    
                                    4.2%
                                 
                                                             | 
                                                        
                    |
| d | 47 | 
                                                                 
                                    
                                    5.6%
                                 
                                                             | 
                                                        
                    |
| z | 225 | 
                                                                 
                                    
                                    26.8%
                                 
                                                             |