List of countries by GDP (nominal)
Gross domestic product (GDP) is the market value of all final goods and services from a nation in a given year. Countries are sorted by nominal GDP estimates from financial and statistical institutions, which are calculated at market or government official exchange rates. Nominal GDP does not take into account differences in the cost of living in different countries, and the results can vary greatly from one year to another based on fluctuations in the exchange rates of the country's currency. Such fluctuations may change a country's ranking from one year to the next, even though they often make little or no difference in the standard of living of its population.
Net material product
GDP began to be calculated in the USSR in 1988, based essentially on the United Nations System of National Accounts. The table compares the new GDP estimates with the traditional NMP numbers (in billions of current rubles). GDP is seen to be 25%–30% higher than NMP due to depreciation and the "non-productive" service sectors included in GDP but not in NMP.