| Value | 
                    Category | 
                                                                            
                                    
                    
                        | 15 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 18 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 20 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 24 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 30 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 35 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 40 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 42 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 45 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 50 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 60 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 70 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 75 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 80 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 90 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 120 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 130 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 140 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 150 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 176 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 180 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 200 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 220 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 260 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 350 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 560 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 980 | 
                          | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 9999998 | 
                        refusal  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 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.