| Value | 
                    Category | 
                                                                            
                                    
                    
                        | -5 | 
                        other  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | -4 | 
                        missing data  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | -3 | 
                        refused to answer  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | -2 | 
                        not applicable  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | -1 | 
                        do not know  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 43 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 44 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 49 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 50 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 51 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 52 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 54 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 55 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 56 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 59 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 62 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 63 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 70 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 73 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 75 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 77 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 86 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                            
            Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.