Mini:Gross domestic product
Gross domestic product or GDP is used in measuring the size of the economy. The GDP of a country is defined as the total market value of all final goods and services produced within a country in a given period of time (usually a calendar year). It is also considered the sum of value added at every stage of production (the intermediate stages) of all final goods and services produced within a country in a given period of time. It thus includes consumption, investment, government spending and cumulative exports (exports minus imports).