| Value | Category | 
                                    
                    
                        | 0 |  | 
                                    
                    
                        | 3 |  | 
                                    
                    
                        | 5 |  | 
                                    
                    
                        | 6 |  | 
                                    
                    
                        | 8 |  | 
                                    
                    
                        | 10 |  | 
                                    
                    
                        | 15 |  | 
                                    
                    
                        | 16 |  | 
                                    
                    
                        | 19 |  | 
                                    
                    
                        | 20 |  | 
                                    
                    
                        | 21 |  | 
                                    
                    
                        | 24 |  | 
                                    
                    
                        | 26 |  | 
                                    
                    
                        | 28 |  | 
                                    
                    
                        | 30 |  | 
                                    
                    
                        | 31 |  | 
                                    
                    
                        | 50 |  | 
                                    
                    
                        | 63 |  | 
                                    
                    
                        | 66 |  | 
                                    
                    
                        | 74 |  | 
                                    
                    
                        | 96 |  | 
                                    
                    
                        | 100 |  | 
                                    
                    
                        | 113 |  | 
                                    
                    
                        | 125 |  | 
                                    
                    
                        | 135 |  | 
                                    
                    
                        | 140 |  | 
                                    
                    
                        | 200 |  | 
                                    
                    
                        | 215 |  | 
                                    
                    
                        | 228 |  | 
                                    
                    
                        | 248 |  | 
                                    
                    
                        | 300 |  | 
                                    
                    
                        | 400 |  | 
                                    
                    
                        | 452 |  | 
                                    
                    
                        | 500 |  | 
                                    
                    
                        | 900 |  | 
                                    
                    
                        | 2000 |  | 
                                    
                    
                        | 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.