Foreign direct investment, net inflows (% of GDP) - World, Angola, Denmark, United States, Saudi Arabia, Syrian Arab Republic, Sierra Leone, Congo, Dem. Rep., Tonga, St. Vincent and the Grenadines
International Financial Statistics and Balance of Payments databases, International Monetary Fund ( IMF );
International Debt Statistics, World Bank ( WB );
World Bank GDP estimates, World Bank ( WB );
OECD GDP estimates, Organisation for Economic Co-operation and Development ( OECD )
