| Value | Category | 
                                    
                    
                        | -9 | Don't Know | 
                                    
                    
                        | -8 | Refused | 
                                    
                    
                        | -5 | Not Applicable | 
                                    
                    
                        | -3 | Missing | 
                                    
                    
                        | 0 |  | 
                                    
                    
                        | 3 |  | 
                                    
                    
                        | 2500 |  | 
                                    
                    
                        | 2600 |  | 
                                    
                    
                        | 3000 |  | 
                                    
                    
                        | 4300 |  | 
                                    
                    
                        | 6000 |  | 
                                    
                    
                        | 8000 |  | 
                                    
                    
                        | 10000 |  | 
                                    
                    
                        | 13000 |  | 
                                    
                    
                        | 15000 |  | 
                                    
                    
                        | 42000 |  | 
                                    
                    
                        | 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.