Thanks for pointing that out, but even your charts show a 20% decline in mortality since helmet wearing increased. The problem with your seatbelt charts is that their skewed! How's that you scream? Simple, as the cars get newer they have been crashing better thus protecting the occupants better, plus air bags began to be more common place and that's why the big decrease in fatalities starting in 91, belts were required in cars long before 91 or 88, so the decrease is due to air bags and car safety crash or crumple zones. So I don't buy those charts for seat belts. Like I said, I wear seat belts so I'm not trying to champion the cause of not wearing them, but your charts don't prove the worthiness of seat belts.