A calculation of the total amount of economic activity that happens during a specific time period (usually one financial quarter or one calendar year) within the geographical borders of a country. This includes goods produced, services rendered, and the net value of international trades (exports minus imports). A decrease in GDP for two consecutive quarters is the technical definition of an economic recession. A related calculation is GDP per capita, which measures the economic activity of a country divided by the number of people living within the country's borders and provides an idea of how much economic activity is happening per person.