| Value | Category | Cases | |
|---|---|---|---|
| 1 | within the past year | 20 | 
                                                                 
                                    
                                    27.4%
                                 
                                                             | 
                                                        
                    
| 2 | within the past 2 years | 12 | 
                                                                 
                                    
                                    16.4%
                                 
                                                             | 
                                                        
                    
| 3 | within the past 3 years | 15 | 
                                                                 
                                    
                                    20.5%
                                 
                                                             | 
                                                        
                    
| 4 | within the past 5 years | 8 | 
                                                                 
                                    
                                    11%
                                 
                                                             | 
                                                        
                    
| 5 | 5 or more years ago | 17 | 
                                                                 
                                    
                                    23.3%
                                 
                                                             | 
                                                        
                    
| 77 | don't know | 1 | 
                                                                 
                                    
                                    1.4%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 1695 |