GDP alone does not tell the whole story about a nation's economic well-being. One must also ask, how large a share is available to the average individual as income? In other words, GDP must be considered in relation to the size of the population it supports. Two economies with similar total GDP may not deliver comparable standards of living if one nation has a small population and the other has a very large one. To assess this aspect of economic performance, economists look at per capita GDP.
Per capita GDP is simply the value of total GDP divided by the number of people in the country. If total GDP conveys the size of the "whole pie," per capita GDP expresses how big a slice there is for each individual in the country. Per capita GDP does not reflect how wealthy the people really are; it only shows how well off they would be if everybody got an equal share of what the economy produces.