| Value | Category | Cases | |
|---|---|---|---|
| 0 | 400 | 
                                                                 
                                    
                                    62.7%
                                 
                                                             | 
                                                        
                    |
| 1 | 162 | 
                                                                 
                                    
                                    25.4%
                                 
                                                             | 
                                                        
                    |
| 2 | 64 | 
                                                                 
                                    
                                    10%
                                 
                                                             | 
                                                        
                    |
| 3 | 12 | 
                                                                 
                                    
                                    1.9%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 2 |