Index (HDI) as an indicator of economic and social well-being. The GDP measure is adjusted for purchasing power parity using international dollars, calculated by dividing national GDP by population estimates for 2008 obtained from the World Development Indicators database, World Bank, September 15, 2009, (http://siteresources.worldbank.org/DATASTATISTICS/Resources/GDP_PPP.pdf and http://siteresources.worldbank.org/DATASTATISTICS/Resources/POP.pdf). The HDI is based on indicators of life expectancy, educational attainment and income and is intended to serve as a frame of reference for both social and economic development (http://hdr.undp.org/en/humandev/hdi/). The HDI estimates for 2007 for each country were obtained from Human Development Reports of the United Nations Development Program (http://hdr.undp.org/en/media/HDR_2009_EN_Table_H.pdf). An HDI estimate was not available for Isle of Man.
