| Value | Category | Cases | |
|---|---|---|---|
| 1 | Within past 12 months | 1012 | 
                                                                 
                                    
                                    36%
                                 
                                                             | 
                                                        
                    
| 2 | 1-5 years ago | 485 | 
                                                                 
                                    
                                    17.3%
                                 
                                                             | 
                                                        
                    
| 3 | Not within past 5 years | 1313 | 
                                                                 
                                    
                                    46.7%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 23 |