|
American Enterprise Institute (United States)
19
|
Brookings Institution (United States)
6
|
Centre for Economic Policy Research (United Kingdom)
6
|
|
Danish Institute for International Studies (Denmark)
4
|
Mathematica Policy Research (United States)
4
|
Overseas Development Institute (United Kingdom)
4
|
|
Atlantic Council (United States)
3
|
Center for American Progress (United States)
3
|
Chatham House (United Kingdom)
3
|
|
Centre for International Governance Innovation (Canada)
2
|
International Institute for Environment and Development (United Kingdom)
2
|
National Bureau of Economic Research (United States)
2
|
|
RAND Corporation (United States)
2
|
Carnegie Endowment for International Peace (United States)
1
|
French Institute of International Relations (France)
1
|
|
International Institute for Sustainable Development (Canada)
1
|
World Resources Institute (United States)
1
|
