In order to access the population health, Life Expectancy is the key metric.
Furthermore, Life expectancy provides us information about the average age of death in a population.
The life expectancy for the listed countries on the graph has been increasing over the years except Japan which had a downfall during the year 1945 due to the world war two impact.
With the advances in Modern Medicine and better awareness of health among people, has contributed heavily to the increase in Life Expectancy.
It is crystal clear that health expenditure per capita has linearly related to life expectancy.
The third world countries allocate less for health expenditure per capita, which is one of the reasons why their life expectancy sits at the bottom of the table.
The life expectancy of women is much higher than that of Men across all countries. The discrepancy is varied across nations, though.
The difference in the lifestyle of both genders is one of the reasons why Women tops life expectancy index.