Country/Region Comparison

Documents
YearUnited StatesChinaUnited Kingdom
1996170372313902
1997162383053804
1998148284773660
1999153104543993
2000156654584028
2001164314004239
2002165435374282
2003173117334504
2004175719044546
20051834410854738
20061921016845228
20071978618085477
20082021226755519
20092153227055764
20102247734045913
20112461441846293
20122400947246399
20132484656757032
20142665360697273
20152693970657662
20162715885497742
20172752187807981
201828629106188346
201928863115018270
202030080146508872
2021326081780610015
202229874224299022
202328188199958437
202427132211178591
Citable documents
YearUnited StatesChinaUnited Kingdom
1996167812293771
1997160213043629
1998145304773475
1999147694533674
2000151564543763
2001158203993878
2002158545333971
2003166917294164
2004168748994187
20051740110724323
20061820016744717
20071850017854890
20081891926455013
20091995026595241
20102081133315310
20112279540945670
20122231245955758
20132310955096390
20142461758936642
20152496968887005
20162495283446975
20172528985717200
201826233103847493
201926587112667540
202027356142657908
202130171174779111
202226908220498059
202325373194517596
202424752206847740
Non-citable documents
YearUnited StatesChinaUnited Kingdom
19962562131
19972171175
19982980185
19995411319
20005094265
20016111361
20026894311
20036204340
20046975359
200594313415
2006101010511
2007128623587
2008129330506
2009158246523
2010166673603
2011181990623
20121697129641
20131737166642
20142036176631
20151970177657
20162206205767
20172232209781
20182396234853
20192276235730
20202724385964
20212437329904
20222966380963
20232815544841
20242380433851
Cited documents
YearUnited StatesChinaUnited Kingdom
1996147601833547
1997144992183454
1998141563433440
1999146593293746
2000149793723736
2001153523353937
2002156094714039
2003163696284297
2004170198084396
2005177389544557
20061856613825026
20071897715555238
20081955322705297
20092073123865563
20102167230155692
20112349536986029
20122317342806121
20132394752576750
20142557557627006
20152583367927374
20162600181647438
20172635484347610
201827371101367956
201927508110387901
202028506137488415
202130377164399353
202226436198828085
202322215157196888
20241060875503682
Non-cited documents
YearUnited StatesChinaUnited Kingdom
1996227748355
1997173987350
1998672134220
1999651125247
200068686292
2001107965302
200293466243
2003942105207
200455296150
2005606131181
2006644302202
2007809253239
2008659405222
2009801319201
2010805389221
20111119486264
2012836444278
2013899418282
20141078307267
20151106273288
20161157385304
20171167346371
20181258482390
20191355463369
20201574902457
202122311367662
202234382547937
2023597342761549
202416524135674909
Cites
YearUnited StatesChinaUnited Kingdom
19969579356703207806
199710729596894233415
199811217619127249829
1999122063911676279843
2000134060512993320020
2001131688212381331135
2002135272024409346741
2003140989426816369076
2004150890837841381826
2005149313346241400623
2006150079658931398482
2007151007869330391796
2008147822192218406639
2009148868497221400445
20101480804122531411609
20111504510133972406963
20121359676148898384237
20131327057183166413184
20141281813207546398009
20151222344243305357947
20161097995261532360650
20171046595275749345096
2018946333310714314079
2019787316292675269522
2020683429336407246801
2021496513254533190684
2022273809187027102810
20231239868742247620
2024262701926710277
External Cites
YearUnited StatesChinaUnited Kingdom
19964793185576163583
19975358115580184618
19985652166826197956
19996132438877223644
20007022339715256679
20016852179069266703
200270680718706279523
200374493218830296317
200480008025096308925
200579680231498324417
200680420438017319868
200781356545256313422
200880170458646327025
200980351962869320524
201080474375864328857
201181889282218325458
201273956489029306980
2013724359107010330499
2014704099116572318378
2015679958132297283400
2016616090134291286230
2017599932140817278299
2018546470151199250807
2019459789138936216569
2020406823165588198453
2021288902107120152326
20221577747574081564
2023700283449636939
20241431876807861
Self Cites
YearUnited StatesChinaUnited Kingdom
1996478617112744223
1997537148131448797
1998556545230151873
1999607396279956199
2000638372327863341
2001631665331264432
2002645913570367218
2003664962798672759
20047088281274572901
20056963311474376206
20066965922091478614
20076965132407478374
20086765173357279614
20096851653435279921
20106760614666782752
20116856185175481505
20126201125986977257
20136026987615682685
20145777149097479631
201554238611100874547
201648190512724174420
201744666313493266797
201839986315951563272
201932752715373952953
202027660617081948348
202120761114741338358
202211603511128721246
2023539585292610681
202411952115872416
% International Collaboration
YearUnited StatesChinaUnited Kingdom
199621.5448.9231.34
199718.7336.7228.89
199822.3426.2134.10
199921.4231.7232.13
200021.4034.9331.95
200119.9831.5032.37
200221.7438.1834.91
200325.5039.1540.96
200426.9441.8141.73
200527.5040.2844.36
200627.2434.0343.90
200728.1235.3444.53
200830.0532.7948.83
200929.8234.7549.81
201029.7933.5252.07
201129.0930.7852.18
201230.9130.5053.24
201332.3630.8455.25
201432.8033.6558.42
201535.1035.2460.47
201636.3331.4462.75
201737.0133.1562.91
201838.5431.6564.58
201938.7630.8966.64
202039.1227.4867.35
202140.2125.0368.39
202239.9819.9469.52
202340.8220.9871.62
202441.7119.5071.45
% Open Access
YearUnited StatesChinaUnited Kingdom
199619.8912.1221.19
199725.8912.7928.18
199827.6919.0830.98
199927.0717.1831.53
200024.3514.8532.40
200125.3513.0033.43
200227.3317.8831.88
200328.3916.7834.59
200426.6318.0333.06
200529.2815.9434.93
200633.5616.5137.28
200744.4418.7541.63
200857.0624.3443.14
200961.4227.5446.70
201064.8926.6248.71
201163.8725.2948.58
201266.2926.8853.18
201366.8730.5955.56
201468.0036.1362.89
201569.8138.2468.65
201668.9441.3377.09
201770.8648.6380.29
201871.0152.5881.58
201971.0654.8382.79
202073.3556.4483.27
202175.8162.5984.54
202276.5470.9884.99
202375.4366.1485.59
202461.0560.7777.94
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