| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than a year | 743 | 
                                                                 
                                    
                                    33.3%
                                 
                                                             | 
                                                        
                    
| 2 | 1 year to less than 3 years | 1099 | 
                                                                 
                                    
                                    49.2%
                                 
                                                             | 
                                                        
                    
| 3 | 3 years or more | 355 | 
                                                                 
                                    
                                    15.9%
                                 
                                                             | 
                                                        
                    
| 9 | Unspecified | 35 | 
                                                                 
                                    
                                    1.6%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 64173 |