For 10 points, identify this quantity which is equal to the value of the sum of all goods and services produced in a country.
The BEA currently uses the more accurate "chain weighting" method to calculate this quantity, and Okun's law relates the gap in this quantity to unemployment. Purchasing power parity is usually taken into account when comparing it between two nations. Its namesake deflator is the ratio between the nominal and real forms of this quantity, which does not include payments made to foreign nations. For 10 points, identify this quantity which is equal to the value of the sum of all goods and services produced in a country.
The BEA currently uses the more accurate "chain weighting" method to calculate this quantity, and Okun's law relates the gap in this quantity to unemployment.
{GDP} [or {gross domestic product} ; do not accept " {gross national product} ” or " {GNP} "]