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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1952 | 2 |
| 1953 | 1 |
| 1955 | 3 |
| 1956 | 7 |
| 1957 | 2 |
| 1958 | 3 |
| 1959 | 4 |
| 1961 | 4 |
| 1962 | 1 |
| 1966 | 6 |
| 1967 | 29 |
| 1968 | 90 |
| 1969 | 120 |
| 1970 | 125 |
| 1971 | 154 |
| 1972 | 128 |
| 1973 | 175 |
| 1974 | 219 |
| 1975 | 134 |
| 1976 | 145 |
| 1977 | 148 |
| 1978 | 183 |
| 1979 | 176 |
| 1980 | 192 |
| 1981 | 171 |
| 1982 | 187 |
| 1983 | 175 |
| 1984 | 255 |
| 1985 | 271 |
| 1986 | 298 |
| 1987 | 294 |
| 1988 | 304 |
| 1989 | 362 |
| 1990 | 451 |
| 1991 | 500 |
| 1992 | 603 |
| 1993 | 705 |
| 1994 | 708 |
| 1995 | 583 |
| 1996 | 428 |
| 1997 | 433 |
| 1998 | 430 |
| 1999 | 434 |
| 2000 | 510 |
| 2001 | 452 |
| 2002 | 471 |
| 2003 | 520 |
| 2004 | 599 |
| 2005 | 576 |
| 2006 | 517 |
| 2007 | 515 |
| 2008 | 541 |
| 2009 | 530 |
| 2010 | 592 |
| 2011 | 671 |
| 2012 | 693 |
| 2013 | 644 |
| 2014 | 531 |
| 2015 | 545 |
| 2016 | 445 |
| 2017 | 512 |
| 2018 | 473 |
| 2019 | 421 |
| 2020 | 441 |
| 2021 | 387 |
| 2022 | 78 |
| 2023 | 25 |
| 2024 | 4 |