This horizontal stacked bar chart displays depression rates across countries, broken down by year from 2015 to 2019. Each bar represents a country, with colored segments corresponding to annual prevalence percentages, and hovering reveals exact values via a custom tooltip. Built with D3 v4, the visualization renders as SVG and uses `d3.stack` for the segmented bars, `d3.scaleOrdinal` for the color palette, and a CSV dataset from GitHub as the data source.