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Rank	Field	Papers	Citations	Citations Per Paper
1	USA	2,959,661	42,269,694	14.28
2	GERMANY	766,146	8,787,460	11.47
3	ENGLAND	678,686	8,768,475	12.92
4	JAPAN	796,807	7,201,664	9.04
5	FRANCE	548,279	5,933,187	10.82
6	CANADA	414,248	4,837,825	11.68
7	ITALY	394,428	4,044,512	10.25
8	NETHERLANDS	231,682	3,148,005	13.59
9	AUSTRALIA	267,134	2,784,738	10.42
10	PEOPLES R CHINA	573,486	2,646,085	4.61
11	SPAIN	292,146	2,602,330	8.91
12	SWITZERLAND	168,527	2,502,210	14.85
13	SWEDEN	174,418	2,257,641	12.94
14	BELGIUM	125,520	1,461,478	11.64
15	SCOTLAND	106,209	1,422,252	13.39
16	DENMARK	91,670	1,262,693	13.77
17	SOUTH KOREA	218,077	1,256,724	5.76
18	ISRAEL	109,637	1,210,807	11.04
19	RUSSIA	276,801	1,135,496	4.10
20	INDIA	237,364	1,088,425	4.59

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Rank Field Papers Citations Citations
Per Paper

1 USA 2,959,661 42,269,694 14.28

2 JAPAN 796,807 7,201,664 9.04

3 GERMANY 766,146 8,787,460 11.47

4 ENGLAND 678,686 8,768,475 12.92

5 PEOPLES R CHINA 573,486 2,646,085 4.61

6 FRANCE 548,279 5,933,187 10.82

7 CANADA 414,248 4,837,825 11.68

8 ITALY 394,428 4,044,512 10.25

9 SPAIN 292,146 2,602,330 8.91

10 RUSSIA 276,801 1,135,496 4.10

11 AUSTRALIA 267,134 2,784,738 10.42

12 INDIA 237,364 1,088,425 4.59

13 NETHERLANDS 231,682 3,148,005 13.59

14 SOUTH KOREA 218,077 1,256,724 5.76

15 SWEDEN 174,418 2,257,641 12.94

16 SWITZERLAND 168,527 2,502,210 14.85

17 BRAZIL 157,860 880,821 5.58

18 TAIWAN 144,807 828,751 5.72

19 POLAND 131,646 766,033 5.82

20 BELGIUM 125,520 1,461,478 11.64

Rank	Field	Papers	Citations	Citations Per Paper
1	SWITZERLAND	168,527	2,502,210	14.85
2	USA	2,959,661	42,269,694	14.28
3	DENMARK	91,670	1,262,693	13.77
4	NETHERLANDS	231,682	3,148,005	13.59
5	SCOTLAND	106,209	1,422,252	13.39
6	SWEDEN	174,418	2,257,641	12.94
7	ENGLAND	678,686	8,768,475	12.92
8	FINLAND	85,567	1,038,721	12.14
9	CANADA	414,248	4,837,825	11.68
10	BELGIUM	125,520	1,461,478	11.64
11	GERMANY	766,146	8,787,460	11.47
12	AUSTRIA	87,953	974,554	11.08
13	ISRAEL	109,637	1,210,807	11.04
14	NORWAY	63,017	691,881	10.98
15	FRANCE	548,279	5,933,187	10.82
16	WALES	35,318	374,996	10.62
17	AUSTRALIA	267,134	2,784,738	10.42
18	ITALY	394,428	4,044,512	10.25
19	IRELAND	37,396	377,181	10.09
20	NORTH IRELAND	17,376	174,069	10.02

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