| Value | Category | 
                                    
                    
                        | -9 | Don't Know | 
                                    
                    
                        | -8 | Refused | 
                                    
                    
                        | -5 | Not Applicable | 
                                    
                    
                        | -3 | Missing | 
                                    
                    
                        | 0 |  | 
                                    
                    
                        | 9 |  | 
                                    
                    
                        | 33 |  | 
                                    
                    
                        | 40 |  | 
                                    
                    
                        | 50 |  | 
                                    
                    
                        | 60 |  | 
                                    
                    
                        | 90 |  | 
                                    
                    
                        | 99 |  | 
                                    
                    
                        | 100 |  | 
                                    
                    
                        | 110 |  | 
                                    
                    
                        | 150 |  | 
                                    
                    
                        | 180 |  | 
                                    
                    
                        | 200 |  | 
                                    
                    
                        | 206 |  | 
                                    
                    
                        | 220 |  | 
                                    
                    
                        | 280 |  | 
                                    
                    
                        | 300 |  | 
                                    
                    
                        | 309 |  | 
                                    
                    
                        | 400 |  | 
                                    
                    
                        | 500 |  | 
                                    
                    
                        | 600 |  | 
                                    
                    
                        | 700 |  | 
                                    
                    
                        | 720 |  | 
                                    
                    
                        | 800 |  | 
                                    
                    
                        | 870 |  | 
                                    
                    
                        | 900 |  | 
                                    
                    
                        | 940 |  | 
                                    
                    
                        | 1000 |  | 
                                    
                    
                        | 1200 |  | 
                                    
                    
                        | 1300 |  | 
                                    
                    
                        | 1500 |  | 
                                    
                    
                        | 1600 |  | 
                                    
                    
                        | 1800 |  | 
                                    
                    
                        | 2000 |  | 
                                    
                    
                        | 2500 |  | 
                                    
                    
                        | 2800 |  | 
                                    
                    
                        | 3000 |  | 
                                    
                    
                        | 3500 |  | 
                                    
                    
                        | 3900 |  | 
                                    
                    
                        | 4000 |  | 
                                    
                    
                        | 4500 |  | 
                                    
                    
                        | 5000 |  | 
                                    
                    
                        | 6000 |  | 
                                    
                    
                        | 7000 |  | 
                                    
                    
                        | 7500 |  | 
                                    
                    
                        | 8000 |  | 
                                    
                    
                        | 8500 |  | 
                                    
                    
                        | 9000 |  | 
                                    
                    
                        | 9500 |  | 
                                    
                    
                        | 10000 |  | 
                                    
                    
                        | 11000 |  | 
                                    
                    
                        | 12000 |  | 
                                    
                    
                        | 12500 |  | 
                                    
                    
                        | 15000 |  | 
                                    
                    
                        | 16000 |  | 
                                    
                    
                        | 18000 |  | 
                                    
                    
                        | 20000 |  | 
                                    
                    
                        | 24000 |  | 
                                    
                    
                        | 25000 |  | 
                                    
                    
                        | 30000 |  | 
                                    
                    
                        | 35000 |  | 
                                    
                    
                        | 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.