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The total money value of all final goods and services in an economy over a one-year period, that is the GDP, plus property income from abroad (interest, rent, dividends and profits) make the gross national product (GNP). The GNP is an important measure of a country's economic well-being, while the GNP per head provides a measure of the average standard of living of the country's people. However, this is only an average measure of what people get. The goods and services available to particular individuals depend on the income distribution within the economy.