| Value | Category | Cases | |
|---|---|---|---|
| 1 | Non-permanent | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 2 | Permanent | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| Missing value | 459 | 
                                                                 
                                    
                                    100%
                                 
                                                             |