This has been done for national rugby union teams. They worked it out from 1871 on. https://en.wikipedia.org/wiki/Raeburn_Shield https://en.wikipedia.org/wiki/

This has been done for national rugby union teams. They worked it out from 1871 on. https://en.wikipedia.org/wiki/Raeburn_Shield https://en.wikipedia.org/wiki/Raeburn_Shield