| Value | Category | 
                                    
                    
                        | 4 |  | 
                                    
                    
                        | 15 |  | 
                                    
                    
                        | 24 |  | 
                                    
                    
                        | 30 |  | 
                                    
                    
                        | 35 |  | 
                                    
                    
                        | 36 |  | 
                                    
                    
                        | 44 |  | 
                                    
                    
                        | 50 |  | 
                                    
                    
                        | 60 |  | 
                                    
                    
                        | 66 |  | 
                                    
                    
                        | 75 |  | 
                                    
                    
                        | 80 |  | 
                                    
                    
                        | 88 |  | 
                                    
                    
                        | 95 |  | 
                                    
                    
                        | 100 |  | 
                                    
                    
                        | 132 |  | 
                                    
                    
                        | 200 |  | 
                                    
                    
                        | 240 |  | 
                                    
                    
                        | 285 |  | 
                                    
                    
                        | 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.