| Value | Category | 
                                    
                    
                        | 100 |  | 
                                    
                    
                        | 125 |  | 
                                    
                    
                        | 180 |  | 
                                    
                    
                        | 300 |  | 
                                    
                    
                        | 350 |  | 
                                    
                    
                        | 380 |  | 
                                    
                    
                        | 400 |  | 
                                    
                    
                        | 600 |  | 
                                    
                    
                        | 1000 |  | 
                                    
                    
                        | 1700 |  | 
                                    
                    
                        | 2200 |  | 
                                    
                    
                        | 2500 |  | 
                                    
                    
                        | 3650 |  | 
                                    
                    
                        | 4200 |  | 
                                    
                    
                        | 7000 |  | 
                                    
                    
                        | 10000 |  | 
                                    
                    
                        | 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.