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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1963 | 1 |
| 1964 | 1 |
| 1965 | 4 |
| 1966 | 40 |
| 1967 | 87 |
| 1968 | 80 |
| 1969 | 112 |
| 1970 | 120 |
| 1971 | 152 |
| 1972 | 137 |
| 1973 | 99 |
| 1974 | 76 |
| 1975 | 47 |
| 1976 | 56 |
| 1977 | 59 |
| 1978 | 93 |
| 1979 | 68 |
| 1980 | 58 |
| 1981 | 56 |
| 1982 | 111 |
| 1983 | 141 |
| 1984 | 143 |
| 1985 | 145 |
| 1986 | 112 |
| 1987 | 102 |
| 1988 | 65 |
| 1989 | 79 |
| 1990 | 86 |
| 1991 | 86 |
| 1992 | 77 |
| 1993 | 88 |
| 1994 | 88 |
| 1995 | 225 |
| 1996 | 452 |
| 1997 | 507 |
| 1998 | 412 |
| 1999 | 338 |
| 2000 | 351 |
| 2001 | 359 |
| 2002 | 352 |
| 2003 | 327 |
| 2004 | 374 |
| 2005 | 428 |
| 2006 | 427 |
| 2007 | 418 |
| 2008 | 420 |
| 2009 | 434 |
| 2010 | 497 |
| 2011 | 516 |
| 2012 | 526 |
| 2013 | 556 |
| 2014 | 554 |
| 2015 | 628 |
| 2016 | 581 |
| 2017 | 547 |
| 2018 | 582 |
| 2019 | 524 |
| 2020 | 442 |
| 2021 | 331 |
| 2022 | 124 |
| 2023 | 99 |
| 2024 | 64 |