GDP is an estimate of market throughput, adding together the value of all final goods and services that are produced and traded for money within a given period of time. It is typically measured by adding together a nation’s personal consumption expenditures (payments by households for goods and services), government expenditures (public spending on the provision of goods and services, infrastructure, debt payments, etc.), net exports (the value of a country’s exports minus the value of imports), and net capital formation (the increase in value of a nation’s total stock of monetized capital goods).
A value with a currency
Questions, answers and comments
GDP for OECD member states are provided at http://stats.oecd.org/Index.aspx?DataSetCode=CSP2010
On the use and limits of GDP, see: R. Constanza, M. Hart, S. Posner and J. Talberth (2009) Beyond GDP: The Need for New Measures of Progress, url (at OECD)