Hello!
Over last 2 days I've downloaded and processed all available region dumps using a simple C# script.
This has allowed me to build an animated bar chart race of amount of nations in top 30 regions in the game.
What you will see is 200 seconds of statistics. You will see rise and fall of regions, how UCRs were sometimes more OP than GCRs.
Enjoy the nostalgia!
Link:
https://youtu.be/N5I2ttlSNhA