| Value | Category | 
                                    
                    
                        | 0 | no purchasing | 
                                    
                    
                        | 1 | shops, services | 
                                    
                    
                        | 2 | green market or from some person | 
                                    
                    
                        | 3 | handicrafts | 
                                    
                    
                        | 4 | received as a gift | 
                            
            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.