| Value | Category | Cases | |
|---|---|---|---|
| 28 | 2 | 
                                    
                                    0.9%
                                 | |
| 29 | 7 | 
                                    
                                    3.3%
                                 | |
| 30 | 34 | 
                                    
                                    15.8%
                                 | |
| 31 | 172 | 
                                    
                                    80%
                                 |