|
National Bureau of Economic Research (United States)
423
|
Centre for Economic Policy Research (United Kingdom)
315
|
Brookings Institution (United States)
294
|
|
Center for Strategic and International Studies (United States)
240
|
Urban Institute (United States)
221
|
RAND Corporation (United States)
136
|
|
American Enterprise Institute (United States)
128
|
Fraser Institute (Canada)
126
|
Mathematica Policy Research (United States)
124
|
|
Pembina Institute (Canada)
89
|
Atlantic Council (United States)
86
|
Resources for the Future (United States)
54
|
|
Overseas Development Institute (United Kingdom)
52
|
Energy Policy Research Group (United Kingdom)
50
|
Carnegie Endowment for International Peace (United States)
45
|
|
International Institute for Environment and Development (United Kingdom)
45
|
Center for Climate and Energy Solutions (United States)
38
|
Centre for International Governance Innovation (Canada)
25
|
|
Chatham House (United Kingdom)
22
|
Environment for Development Initiative (Sweden)
20
|
