| Value | Category | Cases | |
|---|---|---|---|
| 18 | 60 | 
                                                                 
                                    
                                    9.9%
                                 
                                                             | 
                                                        
                    |
| 19 | 238 | 
                                                                 
                                    
                                    39.3%
                                 
                                                             | 
                                                        
                    |
| 20 | 159 | 
                                                                 
                                    
                                    26.3%
                                 
                                                             | 
                                                        
                    |
| 21 | 104 | 
                                                                 
                                    
                                    17.2%
                                 
                                                             | 
                                                        
                    |
| 22 | 41 | 
                                                                 
                                    
                                    6.8%
                                 
                                                             | 
                                                        
                    |
| 23 | 3 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             |