Interesting how South America and Africa have absolutely zero traffic reported. I thought at least Africa, with it's shortage of IPv4 addresses, much like Asia, would have picked up on IPv6 to a larger extent than the "IPv4 wealthy" nations in the industrialized parts of the world.

Anyone have any theories? Ideas?

There's no IPv4 shortage in Africa; there might be a shortage of computers per capita but that's a different issue. http://www.potaroo.net/tools/ipv4/