Gross National Product and Gross Domestic Product is the total value of the finished goods and services produced in the economy. It is not a precise measure of national economic well-being but expressed in volume (adjusted for inflation) it is the closest single number we have got to such a measure. It is the sum of final expenditures; Export of goods and services, Imports of goods and services, Private Consumption, Government Consumption, Gross Fixed Capital Formation and Increases/Decreases(-) in stocks. The difference between Gross National Product and Gross Domestic Product is the Net Factor Income/Payments abroad. Stocks and flows are measured according to their exchange value i.e. the value at which flows and stocks are in fact, or should be, exchanged for cash.