This choropleth visualizes the dependency ratio projections from 2015 to 2100 across global regions and countries, using a color scale automatically calculated from the data values. The map is rendered with Highmaps, with each country or region shaded according to its dependency ratio for the selected year, allowing quick comparison of demographic burdens. The underlying data is sourced from a gist by BruceHenry, released under the MIT license, and includes projected values at five-year intervals, enabling temporal analysis of shifting dependency patterns across the century.