| Value | Category | Cases | |
|---|---|---|---|
| 1 | 16 | 
                                                                 
                                    
                                    76.2%
                                 
                                                             | 
                                                        
                    |
| 2 | 5 | 
                                                                 
                                    
                                    23.8%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 1979 |