| Value | Category | Cases | |
|---|---|---|---|
| -1 | 8342 | 
                                                                 
                                    
                                    51.1%
                                 
                                                             | 
                                                        
                    |
| 0 | 3150 | 
                                                                 
                                    
                                    19.3%
                                 
                                                             | 
                                                        
                    |
| 1 | 4833 | 
                                                                 
                                    
                                    29.6%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 245 |