6.4 Comparing gdp among countries  (Page 2/9)

Gdp per capita

The U.S. economy has the largest GDP in the world, by a considerable amount. The United States is also a populous country; in fact, it is the third largest country by population in the world, although well behind China and India. So is the U.S. economy larger than other countries just because the United States has more people than most other countries, or because the U.S. economy is actually larger on a per-person basis? This question can be answered by calculating a country’s GDP per capita    ; that is, the GDP divided by the population.

The second column of [link] lists the GDP of the same selection of countries that appeared in the previous Tracking Real GDP over Time and [link] , showing their GDP as converted into U.S. dollars (which is the same as the last column of the previous table). The third column gives the population for each country. The fourth column lists the GDP per capita. GDP per capita is obtained in two steps: First, by dividing column two (GDP, in billions of dollars) by 1000 so it has the same units as column three (Population, in millions). Then dividing the result (GDP in millions of dollars) by column three (Population, in millions).

Notice that the ranking by GDP is different from the ranking by GDP per capita. India has a somewhat larger GDP than Germany, but on a per capita basis, Germany has more than 10 times India’s standard of living. Will China soon have a better standard of living than the U.S.? Read the following Clear It Up feature to find out.

The high-income nations of the world—including the United States, Canada, the Western European countries, and Japan—typically have GDP per capita in the range of $20,000 to $50,000. Middle-income countries, which include much of Latin America, Eastern Europe, and some countries in East Asia, have GDP per capita in the range of $6,000 to $12,000. The low-income countries in the world, many of them located in Africa and Asia, often have GDP per capita of less than $2,000 per year.

Key concepts and summary

Since GDP is measured in a country’s currency, in order to compare different countries’ GDPs, we need to convert them to a common currency. One way to do that is with the exchange rate, which is the price of one country’s currency in terms of another. Once GDPs are expressed in a common currency, we can compare each country’s GDP per capita by dividing GDP by population. Countries with large populations often have large GDPs, but GDP alone can be a misleading indicator of the wealth of a nation. A better measure is GDP per capita.

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