The Adecco Group

Airlines for America

American Enterprise Institute

American Farm Bureau Federation

Amnesty International

Angus Deaton, Princeton University

Angus Maddison, University of Groningen

Austrian Federal Ministry of Science, Research, and Economy

Aviation Safety Network

Benjamin Valentino, Dartmouth College

Brewers Association

Brookings Institution

Bruce D. Meyer, University of Chicago

Center for Systemic Peace

Centre for Research on the Epidemiology of Disasters

Charities Aid Foundation

Clio Infra

Conference Board

The Correlates of War Project

Daniel J. Ikenson, Cato Institute

Deepak Lal, University of California at Los Angeles


Don Boudreaux, George Mason University

Earth Policy Institute

The Economist Intelligence Unit


European Commission, Emissions Database for Global Atmosphere


Federal Reserve Bank of St. Louis

Fraser Institute

Freedom House


Giving USA

Global Terrorism Database

Hans Kristensen, Nuclear Information Project, Federation of American Scientists

Human Freedom Index

Human Security Report

Index Mundi

Indur Goklany, the United States Department of the Interior

INSEAD, Human Capital Leadership Institute

Internal Displacement Monitoring Centre

International Agency for Research on Cancer

International Energy Agency

International Labour Organization

International Migration Database

James Sullivan, University of Notre Dame

 Jesse H. Ausubel, Professor, the Rockefeller University

Johan Norberg, Cato Institute

John C. McCallum, National University of Singapore

John R. Christy, University of Alabama in Huntsville

Jong-Wha Lee, Korea University

Journal of Development Economics

Maddison Project

Marcel P. Timmer, University of Groningen 

Mark Perry, American Enterprise Institute

Matt Ridley, journalist and businessman

Max Roser, University of Oxford

Maxim Pinkovskiy, Federal Reserve Bank of New York

Michael D. Tanner, Cato Institute

Migration Policy Institute


National Center for Biotechnology Information

National Data Archive on Child Abuse and Neglect

National Oceanic and Atmospheric Administration

National Vital Statistics System

National Weather Service, U.S. National Oceanic and Atmospheric Administration

Natural Resources Defense Council

New York University Development Research Institute

Organisation for Economic Co-operation and Development

Pew Research Center

The People History

Political Instability Task Force

Reason Foundation

Research Affiliates

Richard Alm, O’Neil Center for Global Markets and Freedom

Robert Barro, Harvard University

Robert C. Feenstra, University of California

Robert Inklaar, University of Groningen

Ronald Bailey, Reason Magazine

Sarah Skwire, Liberty Fund

Satellite Industry Association

The Soft Power 30: A Ranking of Global Soft Power

Space Launch Report

Steven Pinker, Harvard University

Transparency International

U.S. Board of Governors of the Federal Reserve System

U.S. Bureau of Economic Analysis

U.S. Bureau of Justice Statistics, National Crime Victimization Survey

U.S. Bureau of Labor Statistics

U.S. Census Bureau

U.S. Census Bureau, Housing and Household Economic Statistics Division

U.S. Centers for Disease Control and Prevention

U.S. Congressional Budget Office

U.S. Department of Agriculture, Economic Research Service

U.S. Department of Agriculture, Natural Resources Conservation Service

U.S. Department of Homeland Security via STATcompiler

U.S. Energy Information Administration

U.S. Environmental Protection Agency

U.S. Federal Aviation Administration

U.S. Federal Bureau of Investigation

U.S. Federal Communications Commission

U.S. National Aeronautics and Space Administration

U.S. National Highway Traffic Safety Administration

U.S. Office of Foreign Disaster Assistance


United Nations AIDS

United Nations Department of Economic and Social Affairs, Population Division

United Nations Development Programme

United Nations Educational, Scientific and Cultural Organization

United Nations Environment

United Nations Food and Agriculture Organization

United Nations Framework Convention on Climate Change

United Nations Integrated Implementation Framework

United Nations Millennium Development Goals Indicators

United Nations Office on Drugs and Crime Statistics

United Nations Population Division Department of Economic and Social Affairs

United Nations Refugee Agency

Université Catholique de Louvain

University of Texas Inequality Project

Uppsala Conflict Data Program

W. Michael Cox, Southern Methodist University’s Cox School of Business

World Bank

World Economic Forum

World Happiness Report

World Health Organization

World Travel and Tourism Council

World Values Survey

Xavier Sala-i-Martin, Columbia University