So, is this turning into your reading challenge for next year? Your reading challenges for the last couple years have been very interesting to follow and this one seems like it would be just as good.
I don't have that information handy (I don't track much about authors, just books), but I am quite sure my list would be very short. I only know of 6 off the top of my head: US (most), UK (Doyle, Pratchett, etc), Russia (Roadside Picnic - Strugatsky), France (Verne), China (Cixin Liu), Canada (Cyril Kowaliski). Of these, I only remember one author from the last 4, but it could be more.