These are the Python scripts that I've been using to create these two area charts of TOP500 supercomputers for use on Wikipedia:
https://commons.wikimedia.org/wiki/File:Processor_families_in_TOP500_supercomputers.svg
https://commons.wikimedia.org/wiki/File:Countries_with_TOP500_supercomputers.svg
Requires Python 2.7:
$ pip install -r requirements.txt
$ ./get-country-lists.sh # Fetch country name mapping (country-{en,fr,es}.csv)
$ ./top500.py # Download and combine latest biannual spreadsheets from top500.org
$ ./top500_plot.py # Create PNG- and SVG-format plots using TOP500_history.csv
GPLv3 or later