The answer is never because GDP per capita depends on GDP and population. Countries with more people have the potential to make more goods and services. But, having more people also lowers GDP per capita, because more people have to share these products.
As the country's GDP is measured by the total amount of the economic output of any country i.e the total amount of money a country makes over the years.
GDP per capita is the total output derived by the number of people in the population thus its the average amount of money over the per person.
Higher the GDP means greater purchasing capacity but not all nations prove this fact as changes in GDP over the years don't make the people purchase or spend wisely as most of this GDP is responsible for the large scale inequalities among people.
GDP is calculated by the real gross domestic product divided by the population. The United States has a GDP: 20.49 trillion but not all people have the same purchasing power.
