British India salt revenue 1840-1877

This area chart sample shows the revenue collected by the East India Company (after 1858 the British government) from salt (including inland and port taxes and sale of government salt). It was designed on the base of the Wikimedia Commons file: British India salt revenue 1840-1877.png.
[commons.wikimedia.org/ wiki/ File:British_ India_ salt_ revenue_ 1840-1877.png]
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. [creativecommons.org/ licenses/ by-sa/ 3.0/ deed.en]
"The Inland Customs Line which incorporated the Great Hedge of India (or Indian Salt Hedge[1]) was a customs barrier built by the British across India primarily to collect the salt tax. The customs line was begun while India was under the control of the East India Company but continued into the period of direct British rule. The line had its beginnings in a series of customs houses that were established in Bengal in 1803 to prevent the smuggling of salt to avoid the tax. These customs houses were eventually formed into a continuous barrier that was brought under the control of the Inland Customs Department in 1843." [Inland Customs Line. Wikipedia]
The area graph example "British India salt revenue 1840-1877" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Area Charts solution from the Graphs and Charts area of ConceptDraw Solution Park.