I have compared the number of people who were born and dead in 2015 in UK by the country level. The numbers were originally from 'Population Estimates for UK, England and Wales, Scotland and Northern Ireland" data that is downloaded from Office of National Statistics - UK ( (https://www.ons.gov.uk/peoplepopulationandcommunity/populationandmigration/populationestimates/datasets/populationestimatesforukenglandandwalesscotlandandnorthernireland) I have downloaded the boundary data from UK Data Service in Shapefile and converted to GeoJSON. (https://borders.ukdataservice.ac.uk/bds.html)