As far as I know, it's global production too, so you need to allow for what went into the US market, eg most of the UZZ30's which don't appear to be very common coming from Japan.
JZZ30s, UZZ31s and UZZ32s were Jap only, then you gotta add the Jap proportion of UZZ30s, it will look like a fairly even number, maybe a little bit more TTs, but not by much...