| Value | Category | 
                                    
                    
                        | 0 |  | 
                                    
                    
                        | 1 | Yes | 
                                    
                    
                        | 2 | No | 
                                    
                    
                        | 260 |  | 
                                    
                    
                        | 500 |  | 
                                    
                    
                        | 650 |  | 
                                    
                    
                        | 1000 |  | 
                                    
                    
                        | 1500 |  | 
                                    
                    
                        | 1800 |  | 
                                    
                    
                        | 1840 |  | 
                                    
                    
                        | 2400 |  | 
                                    
                    
                        | 3000 |  | 
                                    
                    
                        | 3410 |  | 
                                    
                    
                        | 4000 |  | 
                                    
                    
                        | 4385 |  | 
                                    
                    
                        | 6500 |  | 
                                    
                    
                        | 7000 |  | 
                                    
                    
                        | 8910 |  | 
                                    
                    
                        | 10000 |  | 
                                    
                    
                        | 23000 |  | 
                                    
                    
                        | 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.