Gross domestic product
Gross domestic product (GDP) is a monetary measure of the market value of all the final goods and services produced in a period of time, often annually 
GDP (nominal) per capita does not, however, reflect differences in the cost of living and the inflation rates of the countries; therefore using a basis of GDP per capita at purchasing power parity (PPP) is arguably more useful when comparing differences in living standards between nations.
Natural capital accounting
Adjusted gross domestic product, or green GDP, systematically corrects conventional GDP by taking into account aspects of a country's production of goods and services (e.g. environmental degradation and natural resource depletion) that would not otherwise be included in the indicator, but are relevant to sustainability.