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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1951 | 2 |
| 1953 | 6 |
| 1954 | 7 |
| 1955 | 7 |
| 1956 | 4 |
| 1957 | 6 |
| 1958 | 15 |
| 1959 | 9 |
| 1960 | 8 |
| 1961 | 13 |
| 1962 | 4 |
| 1965 | 2 |
| 1966 | 34 |
| 1967 | 59 |
| 1968 | 81 |
| 1969 | 104 |
| 1970 | 136 |
| 1971 | 184 |
| 1972 | 262 |
| 1973 | 371 |
| 1974 | 458 |
| 1975 | 460 |
| 1976 | 405 |
| 1977 | 434 |
| 1978 | 456 |
| 1979 | 477 |
| 1980 | 479 |
| 1981 | 430 |
| 1982 | 405 |
| 1983 | 453 |
| 1984 | 424 |
| 1985 | 395 |
| 1986 | 391 |
| 1987 | 424 |
| 1988 | 447 |
| 1989 | 430 |
| 1990 | 376 |
| 1991 | 356 |
| 1992 | 339 |
| 1993 | 339 |
| 1994 | 331 |
| 1995 | 305 |
| 1996 | 328 |
| 1997 | 352 |
| 1998 | 339 |
| 1999 | 339 |
| 2000 | 389 |
| 2001 | 363 |
| 2002 | 385 |
| 2003 | 424 |
| 2004 | 469 |
| 2005 | 546 |
| 2006 | 569 |
| 2007 | 572 |
| 2008 | 607 |
| 2009 | 593 |
| 2010 | 596 |
| 2011 | 679 |
| 2012 | 702 |
| 2013 | 642 |
| 2014 | 670 |
| 2015 | 708 |
| 2016 | 660 |
| 2017 | 587 |
| 2018 | 595 |
| 2019 | 559 |
| 2020 | 490 |
| 2021 | 325 |
| 2022 | 63 |
| 2023 | 30 |
| 2024 | 133 |