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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1959 | 1 |
| 1963 | 1 |
| 1964 | 2 |
| 1965 | 12 |
| 1966 | 34 |
| 1967 | 30 |
| 1968 | 44 |
| 1969 | 34 |
| 1970 | 49 |
| 1971 | 42 |
| 1972 | 47 |
| 1973 | 46 |
| 1974 | 66 |
| 1975 | 88 |
| 1976 | 110 |
| 1977 | 109 |
| 1978 | 152 |
| 1979 | 176 |
| 1980 | 244 |
| 1981 | 244 |
| 1982 | 227 |
| 1983 | 279 |
| 1984 | 320 |
| 1985 | 358 |
| 1986 | 431 |
| 1987 | 435 |
| 1988 | 413 |
| 1989 | 417 |
| 1990 | 415 |
| 1991 | 473 |
| 1992 | 430 |
| 1993 | 419 |
| 1994 | 377 |
| 1995 | 377 |
| 1996 | 493 |
| 1997 | 420 |
| 1998 | 451 |
| 1999 | 533 |
| 2000 | 574 |
| 2001 | 567 |
| 2002 | 563 |
| 2003 | 651 |
| 2004 | 681 |
| 2005 | 804 |
| 2006 | 863 |
| 2007 | 838 |
| 2008 | 904 |
| 2009 | 911 |
| 2010 | 994 |
| 2011 | 1027 |
| 2012 | 1038 |
| 2013 | 947 |
| 2014 | 1064 |
| 2015 | 1107 |
| 2016 | 1040 |
| 2017 | 1070 |
| 2018 | 1133 |
| 2019 | 1121 |
| 2020 | 849 |
| 2021 | 495 |
| 2022 | 85 |
| 2023 | 15 |
| 2024 | 10 |