This SVG area chart displays the number of users over a series of years. The visualization is built using D3 v6, specifically leveraging `scaleTime`, `scaleLinear`, `axisBottom`, `axisLeft`, and `area` with `curveBasis` to render the filled path. Data is loaded as CSV from a GitHub gist, with years parsed and user counts converted to numbers. The chart includes labeled axes, a title, and a grid created via tick lines.