| Value | Category | 
                                    
                    
                        | 1000 |  | 
                                    
                    
                        | 2000 |  | 
                                    
                    
                        | 3000 |  | 
                                    
                    
                        | 6000 |  | 
                                    
                    
                        | 6600 |  | 
                                    
                    
                        | 9000 |  | 
                                    
                    
                        | 10000 |  | 
                                    
                    
                        | 11000 |  | 
                                    
                    
                        | 12000 |  | 
                                    
                    
                        | 13000 |  | 
                                    
                    
                        | 15000 |  | 
                                    
                    
                        | 20000 |  | 
                                    
                    
                        | 35000 |  | 
                                    
                    
                        | 40000 |  | 
                                    
                    
                        | 99999998 | 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.