| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| -9 | 7 | 7701 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                            
                        
                        
                            
                    |
| 1 | once | 1117 | 2026520 | 
                                                                 
                                    
                                    16.7%
                                 
                                                             | 
                            
                        
                        
                            
                    
| 2 | twice | 834 | 1505624 | 
                                                                 
                                    
                                    12.4%
                                 
                                                             | 
                            
                        
                        
                            
                    
| 3 | three or more | 471 | 807920 | 
                                                                 
                                    
                                    6.7%
                                 
                                                             | 
                            
                        
                        
                            
                    
| 4 | does not apply | 4303 | 7768561 | 
                                                                 
                                    
                                    64.1%
                                 
                                                             | 
                            
                        
                        
                            
                    
| Sysmiss | 30408 | 58206514 |