The 28% was the greatest divergence. 16% increase in west coast states and -3% in states NOT ON THE WEST COAST! !
But sure, let's play your game, not being exposed to I-131, and your chances of thyroid problems drops relative to those who are exposed.
Again, this is on the us side, where we are told that the exposure potential is within safe limits... and not in Japan where the risks are considerably greater.