Sorry, I don't have the numbers you asked for. But afaik one other effect is that "modern" semiconductor processes like FinFET and Fully-Depleted Silicon-on-Ins

Sorry, I don't have the numbers you asked for. But afaik one other effect is that "modern" semiconductor processes like FinFET and Fully-Depleted Silicon-on-Insulator are less prone to single event upsets and especially result in only a single bit flipping and no drain of a whole region of transistors from a single alpha particle.