I'm working on improving on the Kap documentation, and I'm going to write (or maybe make a video) about how to work with external data, and I want to have a practical example.

I'm looking for some publicly available dataset in tabular form (CSV or spreadsheet format) that contains some interesting data that I can use in the examples. Preferably there are some interesting calculations that can be made on said data as well.

I want to demonstrate simple aggregations, grouping, sorting and visualisation of the data.

It's much nicer if I can show something that has some practical use than just generate some random data.

I might want to use the same data to demonstrate SQL integration too. Any suggestions on data and calculations that I can show would be appreciated.