| Value | Category | 
                                    
                    
                        | -9 | Don't Know | 
                                    
                    
                        | -8 | Refused | 
                                    
                    
                        | -5 | Not Applicable | 
                                    
                    
                        | -3 | Missing | 
                                    
                    
                        | 0 |  | 
                                    
                    
                        | 24 |  | 
                                    
                    
                        | 400 |  | 
                                    
                    
                        | 700 |  | 
                                    
                    
                        | 1140 |  | 
                                    
                    
                        | 1200 |  | 
                                    
                    
                        | 2400 |  | 
                                    
                    
                        | 3250 |  | 
                                    
                    
                        | 3300 |  | 
                                    
                    
                        | 3500 |  | 
                                    
                    
                        | 3600 |  | 
                                    
                    
                        | 5000 |  | 
                                    
                    
                        | 7200 |  | 
                                    
                    
                        | 8000 |  | 
                                    
                    
                        | 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.