Luxembourg has the highest GDP per head of OECD countries; Turkey has the lowest.(Brief Article)

Economist (US), The, March, 2002

Luxembourg has the highest GDP per head of OECD countries; Turkey has the lowest. The OECD rankings use purchasing-power-parity (PPP) exchange rates to convert GDP into a common currency. This produces a better comparison of living standards than market exchange rates, since it compares the real cost of a common basket of goods and services across countries, ignoring short-term exchange-rate movements.