This area plot visualizes the growth of world population from 1950 to 2015, using a smooth, filled curve to emphasize the upward trend over time. The chart is rendered as SVG and built with the D3 v5 library, employing `area`, `curveBasis`, `scaleTime`, and `scaleLinear` to generate the shape. The y-axis ticks are formatted to display values in billions using `format`. Data is loaded from a CSV file, with the population values parsed as numbers and years as dates.