| Value | Category | 
                                    
                    
                        | 1 | Less than 500m | 
                                    
                    
                        | 2 | Between 500m and 1Km | 
                                    
                    
                        | 3 | Between 1Km and 2Km | 
                                    
                    
                        | 4 | Between 3Km and 5Km | 
                                    
                    
                        | 5 | More than 5Km | 
                                    
                    
                        | 6 | Don?t 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.