| Value | Category | Cases | |
|---|---|---|---|
| 1 | ONCE | 931 | 
                                                                 
                                    
                                    41.2%
                                 
                                                             | 
                                                        
                    
| 2 | MORE THAN ONCE | 1323 | 
                                                                 
                                    
                                    58.6%
                                 
                                                             | 
                                                        
                    
| 9 | NO RESPONSE | 3 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 38069 |