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Gross domestic product

Gross domestic product (GDP) is the market value of all officially recognized final goods and services produced within a country in a year, or other given period of time.

GDP per capita is often considered an indicator of a country's standard of living.

GDP per capita is not a measure of personal income.

Under economic theory, GDP per capita exactly equals the gross domestic income (GDI) per capita.

GDP is related to national accounts, a subject in macroeconomics.

GDP is not to be confused with gross national product (GNP) which allocates production based on ownership.

GDP can be determined in three ways, all of which should, in principle, give the same result.

They are the production (or output) approach, the income approach, or the expenditure approach.

The most direct of the three is the production approach, which sums the outputs of every class of enterprise to arrive at the total.

The expenditure approach works on the principle that all of the product must be bought by somebody, therefore the value of the total product must be equal to people's total expenditures in buying things.

The income approach works on the principle that the incomes of the productive factors ("producers," colloquially) must be equal to the value of their product, and determines GDP by finding the sum of all producers' incomes.

Note: This article excerpts material from the Wikipedia article "Gross domestic product", which is released under the GNU Free Documentation License.

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