| Value | Category | Cases | |
|---|---|---|---|
| 1 | within the last 12 months | 808 | 
                                                                 
                                    
                                    27%
                                 
                                                             | 
                                                        
                    
| 2 | 1-5 years ago | 202 | 
                                                                 
                                    
                                    6.8%
                                 
                                                             | 
                                                        
                    
| 3 | not within the last 5 years | 9 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    
| 4 | never | 1675 | 
                                                                 
                                    
                                    56%
                                 
                                                             | 
                                                        
                    
| 5 | uncertain | 295 | 
                                                                 
                                    
                                    9.9%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 41 |