| Value | Category | Cases | |
|---|---|---|---|
| 0 | 15 | 
                                                                 
                                    
                                    2.7%
                                 
                                                             | 
                                                        
                    |
| 1 | 219 | 
                                                                 
                                    
                                    40%
                                 
                                                             | 
                                                        
                    |
| 2 | 266 | 
                                                                 
                                    
                                    48.5%
                                 
                                                             | 
                                                        
                    |
| 3 | 48 | 
                                                                 
                                    
                                    8.8%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 616 |