United States | United Kingdom | Republican Party (United States) | Democratic Party (United States) | United States House of Representatives | President of the United States | United Nations | United States Senate | United States Navy | United States Army | Supreme Court of the United States | United States Air Force | Native Americans in the United States | United States Congress | Parliament of the United Kingdom | 66th United States Congress | Prime Minister of the United Kingdom | 74th United States Congress | 18th United States Congress | 73rd United States Congress | 54th United States Congress | 61st United States Congress | United States Marine Corps | United States Department of Defense | 64th United States Congress | 65th United States Congress | 53rd United States Congress | 52nd United States Congress | 55th United States Congress | United States Army Corps of Engineers |
The Urban Indicators Programme of the United Nations Human Settlements Programme (UN-Habitat) developed the indicator so that they could rank cities of the world according to their level of development and as a display of indicators depicting development.