Rank

Countries

Count

Centrality

Rank

Countries

Count

Centrality

1

USA

256

0.18

10

BELGIUM

31

0.09

2

SPAIN

138

0.35

11

CZECYH

REPUBLIC

25

0.73

3

ENGLAND

62

0.09

12

ISRAEL

21

0.55

4

AUSTRALIA

58

0.18

13

TAIWAN

16

0

5

CANADA

0

0

14

NETHERLA

NDS

16

0.09

6

ITALY

0.18

0.18

15

SWEDEN

16

0.1

7

PEOPLES R

CHINA

43

0.68

16

SOUTH

KOREA

15

0

8

GERMANY

42

0.91

17

GREECE

14

0.43

9

TURKEY

41

0

18

PORTUGAL

10

0