This area chart visualizes the number of US university students from 2000 to 2008, using a blue filled region beneath a black curved line. The code employs d3.line and d3.area generators with curveBasis smoothing, alongside d3.scaleLinear for both axes and d3.axisBottom/axisLeft for ticks. Data is loaded via d3.csv from a GitHub Gist, and the SVG is rendered with axis labels and gridlines.