| Value | Category | 
                                    
                    
                        | 1 | formal | 
                                    
                    
                        | 2 | independent | 
                                    
                    
                        | 3 | informal | 
                                    
                    
                        | 4 | other | 
                                    
                    
                        | 5 | publicoffice | 
                                    
                    
                        | 6 | services | 
                                    
                    
                        | 7 | streetsale | 
                                    
                    
                        | 8 | student | 
                                    
                    
                        | 9 | unemployed | 
                            
            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.