| Value | Category | 
                                    
                    
                        | 1 | 01C | 
                                    
                    
                        | 2 | 02C | 
                                    
                    
                        | 3 | 03C | 
                                    
                    
                        | 4 | 04C | 
                                    
                    
                        | 5 | 05C | 
                                    
                    
                        | 6 | 06C | 
                                    
                    
                        | 7 | 07C | 
                                    
                    
                        | 8 | 08C | 
                                    
                    
                        | 9 | 09C | 
                                    
                    
                        | 10 | 13C | 
                                    
                    
                        | 11 | 15C | 
                                    
                    
                        | 12 | 99 | 
                                    
                    
                        | 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.