| Value | Category | 
                                    
                    
                        | 10 | NATURAL | 
                                    
                    
                        | 11 | Earth/sand | 
                                    
                    
                        | 20 | RUDIMENTARY | 
                                    
                    
                        | 21 | Wood | 
                                    
                    
                        | 30 | FINISHED | 
                                    
                    
                        | 33 | Ceramic tiles | 
                                    
                    
                        | 34 | Cement | 
                                    
                    
                        | 35 | Carpet | 
                                    
                    
                        | 96 | OTHER | 
                            
            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.