Does this estimate account for more and more serious trauma being repairable with future technologies? If the entire body and even bits of brain can be regrown/rebuilt, does that still apply?
("In case of car crash, drop severed head in cryoliquid and take to hospital when convenient, preferably within 10 years")
In addition, behaviour would radically change once body immortality (short of smashed head) was available.
In other words, immortal people would be less likely to base jump, fish beyond Arctic circle, drive without a 5 point seatbelt and helmet, etc. They would use simulators for kicks like these.
("In case of car crash, drop severed head in cryoliquid and take to hospital when convenient, preferably within 10 years")