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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1955 | 1 |
| 1956 | 3 |
| 1957 | 3 |
| 1960 | 3 |
| 1963 | 4 |
| 1964 | 50 |
| 1965 | 73 |
| 1966 | 98 |
| 1967 | 120 |
| 1968 | 157 |
| 1969 | 131 |
| 1970 | 139 |
| 1971 | 192 |
| 1972 | 239 |
| 1973 | 276 |
| 1974 | 363 |
| 1975 | 449 |
| 1976 | 514 |
| 1977 | 496 |
| 1978 | 640 |
| 1979 | 651 |
| 1980 | 853 |
| 1981 | 810 |
| 1982 | 808 |
| 1983 | 898 |
| 1984 | 870 |
| 1985 | 1026 |
| 1986 | 953 |
| 1987 | 920 |
| 1988 | 822 |
| 1989 | 956 |
| 1990 | 968 |
| 1991 | 918 |
| 1992 | 810 |
| 1993 | 824 |
| 1994 | 720 |
| 1995 | 710 |
| 1996 | 631 |
| 1997 | 637 |
| 1998 | 573 |
| 1999 | 586 |
| 2000 | 556 |
| 2001 | 556 |
| 2002 | 488 |
| 2003 | 479 |
| 2004 | 425 |
| 2005 | 432 |
| 2006 | 457 |
| 2007 | 494 |
| 2008 | 450 |
| 2009 | 422 |
| 2010 | 405 |
| 2011 | 397 |
| 2012 | 425 |
| 2013 | 356 |
| 2014 | 337 |
| 2015 | 346 |
| 2016 | 317 |
| 2017 | 291 |
| 2018 | 240 |
| 2019 | 257 |
| 2020 | 236 |
| 2021 | 211 |
| 2022 | 212 |
| 2023 | 187 |
| 2024 | 129 |