| Value | Category | Cases | |
|---|---|---|---|
| 0 | 13 | 
                                                                 
                                    
                                    68.4%
                                 
                                                             | 
                                                        
                    |
| 1 | 5 | 
                                                                 
                                    
                                    26.3%
                                 
                                                             | 
                                                        
                    |
| 2 | 1 | 
                                                                 
                                    
                                    5.3%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 17 |