This example displays summary statistics for the 2019 Index of Economic Freedom dataset, showing file size in kilobytes, row count, and column count. The code loads a CSV file from a GitHub gist using `d3.csv` and formats the parsed data with `d3.csvFormat` to calculate the size. It then updates the text content of an HTML `<pre>` element to present the metrics. The example demonstrates basic data loading and parsing with D3 v5, with commented alternatives using `fetch`, `async/await`, and `d3.csvParse`.