It can be seen from the figure that the average life expectancy of people in areas with high health care expenditure is correspondingly longer. But when the average life expectancy reaches about 83 years, no matter how much spending on health care increases, the average life expectancy will not increase significantly.
        The African region has the lowest level of annual health care expenditure, all below 1,000 US dollars, and its average life expectancy is also at the end of the average life span of all regions, mainly between 50-75 years old. The expenditure on health care varies greatly in different regions of Europe, but the average life expectancy is relatively high, mainly around 83 years old. In other regions, the annual health care expenditure is mainly distributed below 2,000 US dollars, and the average life expectancy is mainly distributed between 70-80 years old. Among them, the annual health care expenditure in the United States is the highest at 10,921 US dollars, while the average life expectancy in Japan is about 84 years old. And the chad region has the lowest per capita health care expenditure and the shortest life expectancy.