Countries with over a million documents in Scopus in January 2020. The number of researcher years in the main data set is also reported. This is the number of long-term researchers times the number of years of publications examined (17), subtracting the number of years that each researcher did not publish. This is the effective sample size for the main analysis. The set of all domestic researchers (first and last Scopus publication from the country) is used for reference in some of the graphs.
| Rank . | Country . | Code . | Documents . | All domestic researchers: research years 2001–2016 . | Long-term researchers: research years 2001–2016 . |
|---|---|---|---|---|---|
| 1 | United States | US | 13,489,623 | 4,088,531 | 48,920 |
| 2 | China | CN | 5,196,006 | 4,807,129 | 48,728 |
| 3 | United Kingdom | UK | 3,671,193 | 880,364 | 11,281 |
| 4 | Germany | DE | 3,339,773 | 822,770 | 8,003 |
| 5 | Japan | JP | 3,208,893 | 1,281,662 | 13,524 |
| 6 | France | FR | 2,142,877 | 611,554 | 11,696 |
| 7 | Canada | CA | 1,807,804 | 541,501 | 6,495 |
| 8 | Italy | IT | 1,695,041 | 474,842 | 8,493 |
| 9 | India | IN | 1,641,393 | 1,139,602 | 15,993 |
| 10 | Australia | AU | 1,340,693 | 380,502 | 6,164 |
| 11 | Spain | ES | 1,245,266 | 649,219 | 12,119 |
| 12 | Russian Federation | RU | 1,120,501 | 468,190 | 8,792 |
| Rank . | Country . | Code . | Documents . | All domestic researchers: research years 2001–2016 . | Long-term researchers: research years 2001–2016 . |
|---|---|---|---|---|---|
| 1 | United States | US | 13,489,623 | 4,088,531 | 48,920 |
| 2 | China | CN | 5,196,006 | 4,807,129 | 48,728 |
| 3 | United Kingdom | UK | 3,671,193 | 880,364 | 11,281 |
| 4 | Germany | DE | 3,339,773 | 822,770 | 8,003 |
| 5 | Japan | JP | 3,208,893 | 1,281,662 | 13,524 |
| 6 | France | FR | 2,142,877 | 611,554 | 11,696 |
| 7 | Canada | CA | 1,807,804 | 541,501 | 6,495 |
| 8 | Italy | IT | 1,695,041 | 474,842 | 8,493 |
| 9 | India | IN | 1,641,393 | 1,139,602 | 15,993 |
| 10 | Australia | AU | 1,340,693 | 380,502 | 6,164 |
| 11 | Spain | ES | 1,245,266 | 649,219 | 12,119 |
| 12 | Russian Federation | RU | 1,120,501 | 468,190 | 8,792 |