North America is becomming a bigger market, Europe a smaller, Japan's equal

[Escherichia]

If you go by purchasing power per capita then the US is pretty high up there anywhere between 7th and 2nd place globally depending on the source. Luxembourg is rated at number 1 no matter which numbers are used. The UK is way down there believe it or not at either #13 or 21 depending on the source. Either way the only European countries come close to the US in PPP are Norway, Luxembourg, and Ireland?. 

So yeah the US is probably still a bigger market.