23 Jul 2012

Why GDP per head is a flawed measure of economic well-being

One reason is that, being expressed as an average, it hides shocking disparities between the top and the bottom. So, for example, if you look up Gross World Product in the World Factbook at www.cia.gov/library/publications/the-world-factbook, you find that in 2011 it was 79 trillion US dollars, which is orld population was just approaching seven billion, the average for every man, woman and child on the planet was $11,800 per person per year. 

Compare this to the widely quoted statistic that more than one billion people live on a dollar a day, which is mentioned for example in “Millennium Development Goal 1 – To eradicate extreme poverty” at http://www.oxfam.org.uk/education/resources/change_the_world_in_eight_steps/files/goal_1_updated.pdf
www.oxfam.org.uk/education/resources/change_the_world_in_eight_st
Similarly, the UK average hides shocking disparities between the top and the bottom. In 2011 GDP per person per year was average for every man, woman and child on the planet was $36,600 or £23,000 for every man, woman and child in the country. This would be £92,000 a year for a family of four.

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