Papers
Rank	Field	Papers	Citations	Citations Per Paper
1	USA	2,974,344	44,669,056	15.02
2	JAPAN	788,650	7,602,742	9.64
3	GERMANY	766,162	9,406,841	12.28
4	ENGLAND	682,018	9,399,334	13.78
5	PEOPLES R CHINA	649,689	3,404,466	5.24
6	FRANCE	548,046	6,304,141	11.50
7	CANADA	424,562	5,233,211	12.33
8	ITALY	403,588	4,417,871	10.95
9	SPAIN	305,430	2,942,425	9.63
10	AUSTRALIA	276,622	3,067,686	11.09
11	RUSSIA	273,189	1,199,538	4.39
12	INDIA	253,520	1,288,075	5.08
13	SOUTH KOREA	237,652	1,515,555	6.38
14	NETHERLANDS	236,344	3,419,657	14.47
15	BRAZIL	175,063	1,039,235	5.94
16	SWEDEN	174,789	2,407,364	13.77
17	SWITZERLAND	171,248	2,693,730	15.73
18	TAIWAN	154,634	974,818	6.30
19	POLAND	138,705	864,073	6.23
20	BELGIUM	128,800	1,613,458	12.53
SOURCE: Essential Science Indicators from Thomson Reuters.

 

Citation Per Paper (  10,000 papers)
Rank	Field	Papers	Citations	Citations Per Paper
1	SWITZERLAND	171,248	2,693,730	15.73
2	USA	2,974,344	44,669,056	15.02
3	DENMARK	92,734	1,369,297	14.77
4	NETHERLANDS	236,344	3,419,657	14.47
5	SCOTLAND	106,559	1,522,948	14.29
6	ENGLAND	682,018	9,399,334	13.78
7	SWEDEN	174,789	2,407,364	13.77
8	FINLAND	86,509	1,113,141	12.87
9	BELGIUM	128,800	1,613,458	12.53
10	CANADA	424,562	5,233,211	12.33
11	GERMANY	766,162	9,406,841	12.28
12	AUSTRIA	89,782	1,075,042	11.97
13	ISRAEL	109,410	1,287,435	11.77
14	NORWAY	65,306	764,040	11.70
15	FRANCE	548,046	6,304,141	11.50
16	WALES	35,592	404,997	11.38
17	AUSTRALIA	276,622	3,067,686	11.09
18	ITALY	403,588	4,417,871	10.95
19	NORTH IRELAND	17,485	190,093	10.87
20	IRELAND	39,618	416,966	10.52
SOURCE: Essential Science Indicators from Thomson Reuters.

Additional information:

January 2010: Most-Cited Paper From the Top 20 Countries, 1999-August 31, 2009: The highest-cited paper from each of the top 20 countries are featured. In this ranking, all of the paper's authors are based in the given country, as opposed to multinational collaborations. The countries are listed in the same order as they are above.