| Value | Category | Cases | |
|---|---|---|---|
| 1 | Limited duration | 2232 | 
                                                                 
                                    
                                    16.3%
                                 
                                                             | 
                                                        
                    
| 2 | Permanent nature | 7854 | 
                                                                 
                                    
                                    57.5%
                                 
                                                             | 
                                                        
                    
| 3 | Unspecified duration | 3583 | 
                                                                 
                                    
                                    26.2%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 52736 |