| Value | 
                    Category | 
                                                                            
                                    
                    
                        | 01 | 
                        Employers in industry, commerce, or others in large establishments  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 02 | 
                        Managers in central and local government, industry, commerce, or others in large establishments  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 03 | 
                        Employers in industry, commerce, or others in small establishments  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 04 | 
                        Managers in industry, commerce, or others in small establishments  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 05 | 
                        Self-employed professional workers  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 06 | 
                        Employed professional workers  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 07 | 
                        Ancillary workders and artists  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 08 | 
                        Non-manual foreman and supervisors  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 09 | 
                        Junior non-manual worker  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 10 | 
                        Personal service workers  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 11 | 
                        Manual foreman and supervisors  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 12 | 
                        Skilled manual workers  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 13 | 
                        Semi-skilled manual workers  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 14 | 
                        Unskilled manual workers  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 15 | 
                        Own account workers (other than professional)  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 16 | 
                        Employers and managers in farming  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 17 | 
                        Farmers, own account  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 18 | 
                        Agricultural workers  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 19 | 
                        Members of armed forces  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 98 | 
                        Unknown  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 99 | 
                        NIU (not in universe)  | 
                        
                            
                        
                        
                        
                        
                            
                    
                            
            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.