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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 1 |
| 1965 | 19 |
| 1966 | 39 |
| 1967 | 63 |
| 1968 | 108 |
| 1969 | 98 |
| 1970 | 119 |
| 1971 | 127 |
| 1972 | 120 |
| 1973 | 148 |
| 1974 | 134 |
| 1975 | 160 |
| 1976 | 176 |
| 1977 | 197 |
| 1978 | 206 |
| 1979 | 207 |
| 1980 | 203 |
| 1981 | 227 |
| 1982 | 274 |
| 1983 | 339 |
| 1984 | 374 |
| 1985 | 456 |
| 1986 | 466 |
| 1987 | 458 |
| 1988 | 503 |
| 1989 | 512 |
| 1990 | 552 |
| 1991 | 570 |
| 1992 | 666 |
| 1993 | 632 |
| 1994 | 645 |
| 1995 | 634 |
| 1996 | 669 |
| 1997 | 569 |
| 1998 | 672 |
| 1999 | 660 |
| 2000 | 637 |
| 2001 | 613 |
| 2002 | 717 |
| 2003 | 679 |
| 2004 | 669 |
| 2005 | 708 |
| 2006 | 741 |
| 2007 | 756 |
| 2008 | 756 |
| 2009 | 856 |
| 2010 | 941 |
| 2011 | 926 |
| 2012 | 837 |
| 2013 | 831 |
| 2014 | 798 |
| 2015 | 754 |
| 2016 | 737 |
| 2017 | 685 |
| 2018 | 689 |
| 2019 | 676 |
| 2020 | 526 |
| 2021 | 301 |
| 2022 | 30 |
| 2023 | 11 |
| 2024 | 44 |