This graph basically proves that the bottom end of American society has fall off and says nothing about the quality of care that the majority are getting.
As others have pointed out, life expectancy is only a single facet of the health of a nation and with many sociological factors such as the fact that americans eat too much which leads to heart disease which is not-incidentally the most common cause of death in the USA.
Assuming you have coverage, what you're paying for is word-class care with minimal waiting times.