This area chart visualization displays the cost of sales from 2000 to 2013 using D3.js v5, rendering SVG elements. It employs d3.scaleTime for the x-axis, d3.scaleLinear for the y-axis, and d3.area with d3.curveBasis to create a smooth, filled area beneath a line chart. The data is loaded from a CSV hosted on GitHub, with year values parsed as dates and costs converted to numbers. Axis labels are styled with orange bold text, and gridlines use a light gray color, while the area fill appears light green against a black stroke.