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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1948 | 1 |
| 1951 | 2 |
| 1952 | 1 |
| 1954 | 2 |
| 1955 | 1 |
| 1956 | 2 |
| 1958 | 1 |
| 1965 | 7 |
| 1966 | 28 |
| 1967 | 25 |
| 1968 | 41 |
| 1969 | 51 |
| 1970 | 53 |
| 1971 | 69 |
| 1972 | 97 |
| 1973 | 215 |
| 1974 | 292 |
| 1975 | 263 |
| 1976 | 170 |
| 1977 | 222 |
| 1978 | 300 |
| 1979 | 309 |
| 1980 | 236 |
| 1981 | 300 |
| 1982 | 440 |
| 1983 | 482 |
| 1984 | 402 |
| 1985 | 387 |
| 1986 | 409 |
| 1987 | 425 |
| 1988 | 416 |
| 1989 | 479 |
| 1990 | 491 |
| 1991 | 542 |
| 1992 | 540 |
| 1993 | 473 |
| 1994 | 483 |
| 1995 | 417 |
| 1996 | 369 |
| 1997 | 407 |
| 1998 | 576 |
| 1999 | 468 |
| 2000 | 517 |
| 2001 | 605 |
| 2002 | 650 |
| 2003 | 700 |
| 2004 | 675 |
| 2005 | 697 |
| 2006 | 690 |
| 2007 | 697 |
| 2008 | 714 |
| 2009 | 702 |
| 2010 | 778 |
| 2011 | 894 |
| 2012 | 897 |
| 2013 | 1069 |
| 2014 | 1012 |
| 2015 | 1037 |
| 2016 | 986 |
| 2017 | 1045 |
| 2018 | 873 |
| 2019 | 817 |
| 2020 | 687 |
| 2021 | 473 |
| 2022 | 193 |
| 2023 | 146 |
| 2024 | 41 |