| 1 (102) | National Bureau of Economic Research | USA |  |
| 2 (259) | Institut Zur Zukunft der Arbeit | DEU | |
| 3 (368) | Centre for Economic Policy Research | GBR | |
| 4 (512) | Institute for Systems and Computer Engineering, Technology and Science | PRT | |
| 5 (516) | UNU Maastricht Economic and Social Research Institute on Innovation and Technology | NLD | |
| 6 (536) | CESifo Group | DEU | |
| 7 (777) | Barcelona School of Economics | ESP | |
| 8 (969) | International Monetary Fund | USA | |
| 9 (996) | Organisation for Economic Co-operation and Development | FRA | |
| 10 (1531) | Fondazione Bruno Kessler | ITA | |
| 11 (1933) | RAND Corp | USA | |
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