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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 2 |
| 1965 | 7 |
| 1966 | 16 |
| 1967 | 42 |
| 1968 | 40 |
| 1970 | 1 |
| 1972 | 1 |
| 1980 | 1 |
| 1982 | 1 |
| 1983 | 2 |
| 1984 | 8 |
| 1986 | 2 |
| 1987 | 3 |
| 1988 | 2 |
| 1989 | 34 |
| 1990 | 177 |
| 1991 | 233 |
| 1992 | 335 |
| 1993 | 263 |
| 1994 | 356 |
| 1995 | 377 |
| 1996 | 372 |
| 1997 | 411 |
| 1998 | 497 |
| 1999 | 464 |
| 2000 | 587 |
| 2001 | 656 |
| 2002 | 738 |
| 2003 | 895 |
| 2004 | 840 |
| 2005 | 856 |
| 2006 | 701 |
| 2007 | 704 |
| 2008 | 681 |
| 2009 | 635 |
| 2010 | 576 |
| 2011 | 649 |
| 2012 | 666 |
| 2013 | 744 |
| 2014 | 746 |
| 2015 | 701 |
| 2016 | 700 |
| 2017 | 683 |
| 2018 | 625 |
| 2019 | 615 |
| 2020 | 596 |
| 2021 | 424 |
| 2022 | 141 |
| 2023 | 89 |
| 2024 | 33 |