| Value | Category | 
                                    
                    
                        | 1 | Purchased | 
                                    
                    
                        | 2 | Own production | 
                                    
                    
                        | 3 | Own business | 
                                    
                    
                        | 4 | gifts/received transfers | 
                                    
                    
                        | 5 | gifts/given transfers | 
                                    
                    
                        | 6 | income | 
                            
            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.