| Value | Category | 
                                    
                    
                        | -9 | Don't know | 
                                    
                    
                        | -7 | Legal skip | 
                                    
                    
                        | -6 | Unfinished questionnaire | 
                                    
                    
                        | -5 | No answer | 
                                    
                    
                        | -3 | Interviewer error | 
                                    
                    
                        | 1 | education | 
                                    
                    
                        | 2 | humanities and arts | 
                                    
                    
                        | 3 | social and behavioral science (including economics) | 
                                    
                    
                        | 4 | journalism and information | 
                                    
                    
                        | 5 | business and administration (except secretarial and office work) including accounting, auditing | 
                                    
                    
                        | 6 | secretarial and office work | 
                                    
                    
                        | 7 | law and legal services | 
                                    
                    
                        | 8 | science (except computing) | 
                                    
                    
                        | 9 | computing/information technology | 
                                    
                    
                        | 10 | engineerng and engineering trades | 
                                    
                    
                        | 11 | manufacturing and processing | 
                                    
                    
                        | 12 | building trades and architecture | 
                                    
                    
                        | 13 | agriculture, forestr and fisheries | 
                                    
                    
                        | 14 | veterinary | 
                                    
                    
                        | 15 | health | 
                                    
                    
                        | 16 | social services | 
                                    
                    
                        | 17 | hotel and catering, travel and tourism, sports and leisure | 
                                    
                    
                        | 18 | hairdressing, beauty treatment, cosmetic services | 
                                    
                    
                        | 19 | cleaning, laundry, drycleaning, domestic science | 
                                    
                    
                        | 20 | transport services | 
                                    
                    
                        | 21 | environmental protection | 
                                    
                    
                        | 22 | security services | 
                                    
                    
                        | 23 | general program or no specific fields | 
                                    
                    
                        | 24 | other | 
                                    
                    
                        | 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.