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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 | 32 |
| 1967 | 45 |
| 1968 | 69 |
| 1969 | 108 |
| 1970 | 96 |
| 1971 | 132 |
| 1972 | 146 |
| 1973 | 128 |
| 1974 | 139 |
| 1975 | 125 |
| 1976 | 104 |
| 1977 | 104 |
| 1978 | 111 |
| 1979 | 104 |
| 1980 | 123 |
| 1981 | 169 |
| 1982 | 150 |
| 1983 | 169 |
| 1984 | 198 |
| 1985 | 185 |
| 1986 | 211 |
| 1987 | 185 |
| 1988 | 218 |
| 1989 | 208 |
| 1990 | 273 |
| 1991 | 244 |
| 1992 | 240 |
| 1993 | 257 |
| 1994 | 276 |
| 1995 | 258 |
| 1996 | 263 |
| 1997 | 319 |
| 1998 | 324 |
| 1999 | 328 |
| 2000 | 385 |
| 2001 | 382 |
| 2002 | 363 |
| 2003 | 414 |
| 2004 | 403 |
| 2005 | 422 |
| 2006 | 474 |
| 2007 | 448 |
| 2008 | 510 |
| 2009 | 556 |
| 2010 | 559 |
| 2011 | 593 |
| 2012 | 596 |
| 2013 | 660 |
| 2014 | 592 |
| 2015 | 656 |
| 2016 | 602 |
| 2017 | 607 |
| 2018 | 572 |
| 2019 | 599 |
| 2020 | 557 |
| 2021 | 439 |
| 2022 | 350 |
| 2023 | 336 |
| 2024 | 110 |