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.
Central Bank of Ireland
In response to the July 2016 leprechaun economics affair, the Central Bank convened a cross economic steering group (Economic Statistics Review Group, or "ESRG") including the IFAC, ESRI, NTMA, leading academics and the Department of Finance, to recommend new economic statistics to the Central Statistics Office ("CSO"), that would better represent the Irish economy (given the escalating distortions in GDP and GNP). The result was the introduction of "modified GNI" (or GNI*). Report Site of the ESRG. 2016 Modified GNI* is 70% of 2016 GDP (or 2016 GDP is 143% of 2016 GNI*).