| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes | 391 | 
                                                                 
                                    
                                    2.1%
                                 
                                                             | 
                                                        
                    
| 2 | No | 18323 | 
                                                                 
                                    
                                    97.7%
                                 
                                                             | 
                                                        
                    
| 98 | Don't know | 35 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 51887 |