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A variety of measures of national income and output are used in economics to estimate total economic activity in a country or region, including gross domestic product (GDP), Gross national income (GNI), net national income (NNI), and adjusted national income (NNI adjusted for natural resource depletion – also called as NNI at factor cost).
The gross national income (GNI), previously known as gross national product (GNP), is the total amount of factor incomes earned by the residents of a country. It is equal to gross domestic product (GDP), plus factor incomes received from non-resident by residents, minus factor income paid by residents to non-resident.
Thus the left side gives GDP by the income method, and the right side gives GDP by the expenditure method. The GDP is given on the bottom line of both sides of the report. GDP must have the same value on both sides of the account. This is because income and expenditure are defined in a way that forces them to be equal (see accounting identity ...
Market exchange rate-based cross-country comparisons of GDP at its expenditure components reflect both differences in economic outputs (volumes) and prices. Given the differences in price levels, the size of higher income countries is inflated, while the size of lower income countries is depressed in the comparison.
Net national income encompasses the income of households, businesses, and the government. Net national income is defined as gross domestic product plus net receipts of wages , salaries and property income from abroad, minus the depreciation of fixed capital assets (dwellings, buildings, machinery, transport equipment and physical infrastructure ...
Factor income (also called Primary income or Earned Income) is the flow of income that is derived from the factors of production, i.e., the general inputs required to produce goods and services. Factor income on the use of land is called rent , income generated from labor is called wages , and income generated from capital is divided between ...
At that time gross national product (GNP) was the preferred estimate, which differed from GDP in that it measured production by a country's citizens at home and abroad rather than its "resident institutional units" (see OECD definition above). The switch from GNP to GDP in the United States occurred in 1991.
This represents GDP because all the production in an economy (the left hand side of the equation) is used as consumption (C), investment (I), government spending (G), and goods that are exported in excess of imports (NX). Another equation defining GDP using alternative terms (which in theory results in the same value [citation needed]) is