| Value | Category | 
                                    
                    
                        | 1 | Yes, with detailed accounting system | 
                                    
                    
                        | 2 | Yes, but not in detailed accounting system | 
                                    
                    
                        | 3 | I do not know | 
                            
            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.