| Value | Category | Cases | |
|---|---|---|---|
| 0 | 559 | 
                                                                 
                                    
                                    66.8%
                                 
                                                             | 
                                                        
                    |
| 1 | 218 | 
                                                                 
                                    
                                    26%
                                 
                                                             | 
                                                        
                    |
| 2 | 60 | 
                                                                 
                                    
                                    7.2%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 3701 |