Definitely more to the US than Japan, but there is a lot going to South America, Malaysia, Indonesia, and Australia as well.
It is funny how a few years ago TLV collectors in the US were seriously in the double digits, and that is not an exaggeration. Guys like Toyotageek and Jeff Koch were on board very early, and my first introduction was a few years ago at the Matchbox Convention in Albuquerque (still one of the best diecast shows around), and I think my first purchase was a Skyline Van. It was all downhill from there. It is nice to see a growing number of collectors, but it will always be limited because of how expensive they are.
And, why not show some cars I would love to see them do, with a heavy focus on Neo:
The rest of the time I just like to be surprised. TLV is my JDM education.
By the way, one of these cars might be my favorite car....uh....ever. Can you guess?