get_food_import_data = function(){
    fn = '../../Data/FoodImports.dat'
    DF = read.table(fn, header=FALSE, skip=0, na.strings='.', col.names=c('Country', 'Number_of_shipments_refused', 'Frequency_of_most_common_refusal', 'Total_value_food_imports'), fill=TRUE)
    DF
}