| Value | Category | Cases | |
|---|---|---|---|
| 0 | 504 | 
                                                                 
                                    
                                    79%
                                 
                                                             | 
                                                        
                    |
| 1 | 77 | 
                                                                 
                                    
                                    12.1%
                                 
                                                             | 
                                                        
                    |
| 2 | 40 | 
                                                                 
                                    
                                    6.3%
                                 
                                                             | 
                                                        
                    |
| 3 | 12 | 
                                                                 
                                    
                                    1.9%
                                 
                                                             | 
                                                        
                    |
| 4 | 5 | 
                                                                 
                                    
                                    0.8%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 2 |