| Value | Category | Cases | |
|---|---|---|---|
| a | 308 | 
                                                                 
                                    
                                    36.8%
                                 
                                                             | 
                                                        
                    |
| b | 57 | 
                                                                 
                                    
                                    6.8%
                                 
                                                             | 
                                                        
                    |
| c | 184 | 
                                                                 
                                    
                                    22%
                                 
                                                             | 
                                                        
                    |
| d | 219 | 
                                                                 
                                    
                                    26.1%
                                 
                                                             | 
                                                        
                    |
| z | 70 | 
                                                                 
                                    
                                    8.4%
                                 
                                                             |