| Value | Category | Cases | |
|---|---|---|---|
| -9 | 33 | 
                                    
                                    15.3%
                                 | |
| -7 | 11 | 
                                    
                                    5.1%
                                 | |
| 1 | 9 | 
                                    
                                    4.2%
                                 | |
| 2 | 18 | 
                                    
                                    8.4%
                                 | |
| 3 | 90 | 
                                    
                                    41.9%
                                 | |
| 4 | 54 | 
                                    
                                    25.1%
                                 |