| Value | Category | Cases | |
|---|---|---|---|
| -9 | 1630 | 
                                
                                37.6%
                             | |
| 0 | 317 | 
                                
                                7.3%
                             | |
| 1 | 111 | 
                                
                                2.6%
                             | |
| 9 | 2282 | 
                                
                                52.6%
                             |