Subject: This is population count data clipped from the SEDAC Gridded Population of the World data for 2015, adjusted adjusted to match the 2015 Revision of the United Nations' World Population Prospects (UN WPP) country totals (https://sedac.ciesin.columbia.edu/data/set/gpw-v4-population-count-adjusted-to-2015-unwpp-country-totals-rev11). This is the data that was used to calculate the plastic waste raster based on national rates of waste generation and the portion of waste that is plastic.