This bar chart shows the cumulative number of Lego sets released by Rebrickable from 1949 to 2019, with a steadily increasing running total over time. The visualization uses D3 v5 with SVG rendering, employing `scaleLinear` for the y-axis and `scaleTime` with `scaleBand` for the x-axis. Data is loaded from a CSV file via `dsv`, and axes are generated with `axisLeft` and `axisBottom`. The rectangular bars are appended and positioned using the scales, with the data sourced from Rebrickable.