Graph of global population living on under 1 (dotted lines), 1.25 (solid lines) and 2 (dashed lines) equivalent of 2005 US dollars (red) and as a proportion of world population (blue) from 1981 to 2008, based on World Bank data at <a rel="nofollow" class="external free" href="http://siteresources.worldbank.org/INTPOVCALNET/Resources/Global_Poverty_Update_2012_02-29-12.pdf">http://siteresources.worldbank.org/INTPOVCALNET/Resources/Global_Poverty_Update_2012_02-29-12.pdf</a> .
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