Total | 2001–2005 | 2006–2010 | 2011–2015 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
N docs | N docs Int col | % | N docs | N docs Int col | % | N docs | N docs Int col | % | N docs | N docs Int col | % | |
Country | ||||||||||||
USA | 8735 | 2300 | 26.33 | 2248 | 427 | 18.99 | 2907 | 761 | 26.18 | 3580 | 1112 | 31.06 |
UK | 1629 | 811 | 49.82 | 403 | 156 | 38.71 | 512 | 241 | 47.07 | 714 | 414 | 57.98 |
Japan | 1581 | 285 | 18.03 | 338 | 58 | 17.16 | 518 | 94 | 18.15 | 725 | 133 | 18.34 |
Germany | 1544 | 626 | 40.54 | 388 | 113 | 29.12 | 521 | 186 | 35.70 | 635 | 327 | 51.50 |
France | 1527 | 513 | 33.59 | 417 | 98 | 23.50 | 497 | 155 | 31.19 | 613 | 260 | 42.41 |
Spain | 1251 | 422 | 33.73 | 297 | 61 | 20.54 | 423 | 124 | 29.31 | 531 | 237 | 44.63 |
Peoples R. China | 1126 | 320 | 28.42 | 62 | 21 | 33.87 | 237 | 91 | 38.40 | 827 | 208 | 25.15 |
Canada | 1091 | 503 | 46.10 | 290 | 112 | 38.62 | 361 | 145 | 40.17 | 440 | 246 | 55.91 |
Netherlands | 911 | 414 | 45.44 | 205 | 69 | 33.66 | 279 | 127 | 45.52 | 427 | 218 | 51.05 |
Italy | 859 | 345 | 40.16 | 160 | 43 | 26.88 | 298 | 115 | 38.59 | 401 | 187 | 46.63 |
Australia | 734 | 355 | 48.37 | 150 | 65 | 43.33 | 225 | 111 | 49.33 | 359 | 179 | 49.86 |
Brazil | 600 | 216 | 36 | 74 | 30 | 40.54 | 213 | 75 | 35.21 | 313 | 111 | 35.46 |
Switzerland | 541 | 337 | 62.29 | 128 | 62 | 48.44 | 190 | 123 | 64.74 | 223 | 152 | 68.16 |
South Korea | 534 | 105 | 19.66 | 71 | 19 | 26.76 | 148 | 32 | 21.62 | 315 | 54 | 17.14 |
Taiwan | 509 | 83 | 16.31 | 64 | 11 | 17.19 | 149 | 23 | 15.44 | 296 | 49 | 16.55 |
Total international collaboration | 22,593 | 4248 | 18.80 | 5442 | 781 | 14.35 | 7373 | 1351 | 18.32 | 9778 | 2116 | 21.64 |
Geographic area | ||||||||||||
North America | 9549 | 1276 | 13.36 | 2469 | 216 | 8.75 | 3187 | 407 | 12.77 | 3893 | 653 | 16.77 |
Europe & Central Asia | 9256 | 1033 | 11.16 | 2359 | 167 | 7.08 | 3110 | 341 | 10.96 | 3787 | 525 | 13.86 |
East Asia & Pacific | 4742 | 610 | 12.86 | 743 | 100 | 13.46 | 1374 | 209 | 15.21 | 2625 | 301 | 11.47 |
Latin America & Caribbean | 1099 | 249 | 22.66 | 174 | 45 | 25.86 | 366 | 68 | 18.58 | 559 | 136 | 24.33 |
Middle East & North Africa | 590 | 110 | 18.64 | 115 | 14 | 12.17 | 178 | 28 | 15.73 | 297 | 68 | 22.90 |
Sub-Saharan Africa | 523 | 241 | 46.08 | 121 | 43 | 35.54 | 151 | 67 | 44.37 | 251 | 131 | 52.19 |
South Asia | 461 | 108 | 23.43 | 56 | 10 | 17.86 | 160 | 33 | 20.63 | 245 | 65 | 26.53 |
Total world region collaboration | 22,593 | 3109 | 13.76 | 5442 | 536 | 9.85 | 7373 | 1007 | 13.66 | 9778 | 1566 | 16.02 |