Accumulative Line Graph or Lorenz Curve

Source: http://planning.gov.mv/hies/cover.htm

The accumulative line graph or Lorenz curve is a type of geovisualization. The solid center line represents an equally distribution. The others the actual distribution. This Lorenz curve shows the per capita house expenditures of the Maldives for the time period 1997-98 and 2002-03.