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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1963 | 1 |
| 1975 | 3 |
| 1976 | 1 |
| 1977 | 1 |
| 1978 | 8 |
| 1979 | 9 |
| 1980 | 8 |
| 1981 | 8 |
| 1982 | 8 |
| 1983 | 9 |
| 1984 | 14 |
| 1985 | 28 |
| 1986 | 14 |
| 1987 | 10 |
| 1988 | 11 |
| 1989 | 23 |
| 1990 | 22 |
| 1991 | 12 |
| 1992 | 7 |
| 1993 | 8 |
| 1994 | 8 |
| 1995 | 61 |
| 1996 | 139 |
| 1997 | 271 |
| 1998 | 509 |
| 1999 | 963 |
| 2000 | 1360 |
| 2001 | 1882 |
| 2002 | 2259 |
| 2003 | 2486 |
| 2004 | 1712 |
| 2005 | 428 |
| 2006 | 465 |
| 2007 | 486 |
| 2008 | 549 |
| 2009 | 567 |
| 2010 | 617 |
| 2011 | 694 |
| 2012 | 747 |
| 2013 | 822 |
| 2014 | 814 |
| 2015 | 830 |
| 2016 | 724 |
| 2017 | 628 |
| 2018 | 613 |
| 2019 | 512 |
| 2020 | 449 |
| 2021 | 336 |
| 2022 | 116 |
| 2023 | 65 |
| 2024 | 46 |