Goods and services produced in the underground economy are excluded from GDP.
Gross domestic product (GDP) is the total monetary value, or market value, of all finished products and services produced inside a nation's borders over a certain time period. It serves as a thorough assessment of a particular country's economic health as a broad indicator of entire domestic production. Despite being computed on an annual basis in the majority of cases, GDP is also sometimes estimated on a quarterly basis. The government of the United States, for instance, produces an annualized GDP estimate for both the calendar year and each fiscal quarter. Since each piece of data in this report is presented in actual terms, price changes have been taken into account, and the data is therefore net of inflation.
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