| Value | Category | Cases | |
|---|---|---|---|
| 1 | Within past 12 months | 585 | 
                                                                 
                                    
                                    20.8%
                                 
                                                             | 
                                                        
                    
| 2 | 1-5 years ago | 330 | 
                                                                 
                                    
                                    11.7%
                                 
                                                             | 
                                                        
                    
| 3 | Not within past 5 years | 1898 | 
                                                                 
                                    
                                    67.5%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 20 |