| Value | 
                    Category | 
                                                                            
                                    
                    
                        | -9 | 
                        Don't know (SPONTANEOUS)  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | -8 | 
                        REFUSAL (SPONTANEOUS)  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 1 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 2 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 3 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 6 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 8 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 9 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 12 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 18 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 24 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 25 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 36 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 46 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 48 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 60 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 62 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 72 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 75 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 82 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 84 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 96 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 105 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 120 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 180 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | Sysmiss | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                            
            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.