| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Less than 6 months | 43 | 9574 | 
                                                                 
                                    
                                    46.6%
                                 
                                                             | 
                            
                        
                        
                            
                    
| 2 | 6 months to one year | 25 | 6753 | 
                                                                 
                                    
                                    32.8%
                                 
                                                             | 
                            
                        
                        
                            
                    
| 3 | More than one year | 18 | 4234 | 
                                                                 
                                    
                                    20.6%
                                 
                                                             | 
                            
                        
                        
                            
                    
| Sysmiss | 8914 | 1731547 |