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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1963 43
1985 578
1986 630
1987 709
1988 743
1989 768
1990 684
1991 703
1992 773
1993 817
1994 794
1995 606
1996 647
1997 554
1998 601
1999 597
2000 627
2001 672
2002 783
2003 811
2004 807
2005 847
2006 846
2007 809
2008 843
2009 709
2010 699
2011 671
2012 586
2013 535
2014 453
2015 462
2016 438
2017 501
2018 479
2019 424
2020 438
2021 430
2022 336
2023 353
2024 381

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