Table 1.
Year | Web of Science | Scopus | MEDLINE | NHS Economic Evaluation Database |
---|---|---|---|---|
2000 | 2,577 | 2,794 | 2,145 | 600 |
2001 | 2,371 | 2,805 | 2,169 | 585 |
2002 | 2,797 | 2,875 | 2,281 | 622 |
2003 | 3,240 | 3,356 | 2,501 | 671 |
2004 | 3,432 | 3,338 | 2,577 | 640 |
2005 | 3,747 | 3,577 | 2,645 | 725 |
2006 | 3,940 | 3,937 | 2,790 | 800 |
2007 | 4,419 | 4,291 | 2,773 | 867 |
2008 | 4,915 | 4,648 | 3,034 | 1,033 |
2009 | 5,471 | 5,058 | 3,250 | 1,023 |
2010 | 5,520 | 5,504 | 3,532 | 1,075 |
2011 | 6,047 | 5,800 | 3,689 | 1,224 |
2012 | 6,819 | 6,535 | 4,270 | 1,551 |
2013 | 7,411 | 7,081 | 4,671 | 1,956 |
2014 | 7,843 | 7,652 | 5,913 | 1,386 |
2015 | 8,704 | 7,867 | 6,412 | 3 |
2016 | 8,993 | 7,721 | 5,693 | 0 |