| Value | Category | 
                                    
                    
                        | 1 | Private registered | 
                                    
                    
                        | 2 | Private non registered | 
                                    
                    
                        | 3 | State owned | 
                                    
                    
                        | 4 | Mixed | 
                                    
                    
                        | 5 | Cooperative | 
                                    
                    
                        | 6 | Unknown | 
                                    
                    
                        | 99889988 | REFUSAL | 
                                    
                    
                        | 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.