This visualization shows electronic sales from 2013 to 2021 using both a filled area chart and an overlaid line chart to emphasize the trend. It uses d3.csv to load data from a GitHub Gist, then renders SVG paths via d3.line and d3.area with the curveBasis interpolation. Axes are built with d3.axisBottom and d3.axisLeft, while scales employ d3.scaleTime and d3.scaleLinear, with the area fill colored green and the line stroke in black.