I have no idea how valid the data used is, but thought this article would be fun to put up. It's from a Canadian perspective but looks at sizes world wide and how Canada compares (apparently I am above average for a Canadian even though all previous data I found put me resolutely average overall).
http://www.theloop.ca/news/all/map-of-the-week/article/-/a/2817429/How-we-measure-up-Penis-lengths-and-bra-sizes-around-the-world
Have at it, folks.