Ranking

Count

Countries

Count

Institutions

1

296

USA

31

NBER

2

152

PEOPLES R CHINA

21

Chinese Acad Sci

3

115

ENGLAND

21

World Bank

4

69

GERMANY

14

Tsinghua Univ

5

68

ITALY

12

CEPR

6

48

CANADA

10

Univ Groningen

7

45

SPAIN

10

Beijing Normal Univ

8

44

FRANCE

10

Univ Cambridge

9

42

AUSTRALIA

10

Univ Nottingham

10

36

JAPAN

10

Katholieke Univ Leuven