| Value | Category | Cases | |
|---|---|---|---|
| 0 | 133 | 
                                    
                                    33.3%
                                 | |
| 11 | 161 | 
                                    
                                    40.3%
                                 | |
| 21 | 50 | 
                                    
                                    12.5%
                                 | |
| 31 | 24 | 
                                    
                                    6%
                                 | |
| 41 | 32 | 
                                    
                                    8%
                                 |