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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1959 | 1 |
| 1971 | 1 |
| 1972 | 17 |
| 1973 | 19 |
| 1974 | 27 |
| 1975 | 19 |
| 1976 | 17 |
| 1977 | 20 |
| 1978 | 21 |
| 1979 | 14 |
| 1980 | 13 |
| 1981 | 7 |
| 1982 | 11 |
| 1983 | 10 |
| 1984 | 7 |
| 1985 | 16 |
| 1986 | 20 |
| 1987 | 42 |
| 1988 | 34 |
| 1989 | 51 |
| 1990 | 55 |
| 1991 | 89 |
| 1992 | 111 |
| 1993 | 110 |
| 1994 | 127 |
| 1995 | 189 |
| 1996 | 238 |
| 1997 | 283 |
| 1998 | 478 |
| 1999 | 582 |
| 2000 | 725 |
| 2001 | 736 |
| 2002 | 670 |
| 2003 | 636 |
| 2004 | 681 |
| 2005 | 691 |
| 2006 | 606 |
| 2007 | 694 |
| 2008 | 673 |
| 2009 | 509 |
| 2010 | 472 |
| 2011 | 453 |
| 2012 | 396 |
| 2013 | 404 |
| 2014 | 374 |
| 2015 | 323 |
| 2016 | 283 |
| 2017 | 265 |
| 2018 | 226 |
| 2019 | 221 |
| 2020 | 221 |
| 2021 | 163 |
| 2022 | 157 |
| 2023 | 143 |
| 2024 | 115 |
| 2025 | 53 |