40. Accumulative line graph or Lorenz curve

http://worthwhile.typepad.com/worthwhile_canadian_initi/2011/09/why-are-we-still-using-the-gini.html

A Lorenz Curve shows income distribution among a population by using a cumulative data to plot inequality of wealth distribution. In this case, each population from Denmark, UK, Russia, Netherlands, Korea and Brazil were each cumulatively gathered to plot for comparison of income. This show the degree of inequality between the two observed variables (Korea and Brazil) among the four European nations.