This area chart shows auto sales from 2005 to 2022, with the year on the x-axis and sales figures on the y-axis. The visualization uses smoothed lines and a green filled area beneath the curve to emphasize the trend over time. Built with D3 v5, the code imports and uses `scaleLinear`, `line`, `area`, `curveBasis`, `axisLeft`, and `axisBottom` to construct the chart. Data is loaded asynchronously from a CSV file hosted on GitHub, and the SVG rendering is configured with margins, axis labels, and tick formatting.