This visualization displays US cancer cases per year from 2009 to 2022, using an area chart to emphasize the total volume over time. The chart combines a smooth, black line with a purple filled area beneath it, both generated using D3's `area` and `line` generators with a basis curve. The SVG rendering relies on `scaleLinear` for both axes, `axisLeft` and `axisBottom` for ticks, and loads data from a CSV file hosted on GitHub. The visualization populates the chart by mapping year values to the x-axis and case counts to the y-axis, with bold blue axis labels.