Taking YFull v8.02 from 2/22/2020, I counted samples for each country-level geographic code.
Note, this includes many ethno-geographic codes which would need to be factored in to compute a country or region's total numbers.
Understanding the regional counts can help with interpreting the geographic origin of a subclade. Note that Saudi and British Isles are each responsible for around 10 times the number of samples than the vast majority of regional codes.
I'm making the file available for those wishing to use it to aid their research.