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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1960 | 1 |
| 1966 | 7 |
| 1967 | 14 |
| 1968 | 9 |
| 1969 | 17 |
| 1970 | 35 |
| 1971 | 70 |
| 1972 | 131 |
| 1973 | 197 |
| 1974 | 277 |
| 1975 | 292 |
| 1976 | 399 |
| 1977 | 559 |
| 1978 | 691 |
| 1979 | 798 |
| 1980 | 842 |
| 1981 | 889 |
| 1982 | 810 |
| 1983 | 886 |
| 1984 | 846 |
| 1985 | 826 |
| 1986 | 689 |
| 1987 | 583 |
| 1988 | 573 |
| 1989 | 599 |
| 1990 | 568 |
| 1991 | 548 |
| 1992 | 484 |
| 1993 | 410 |
| 1994 | 414 |
| 1995 | 388 |
| 1996 | 375 |
| 1997 | 336 |
| 1998 | 320 |
| 1999 | 310 |
| 2000 | 321 |
| 2001 | 357 |
| 2002 | 307 |
| 2003 | 301 |
| 2004 | 293 |
| 2005 | 262 |
| 2006 | 321 |
| 2007 | 318 |
| 2008 | 284 |
| 2009 | 250 |
| 2010 | 241 |
| 2011 | 226 |
| 2012 | 227 |
| 2013 | 243 |
| 2014 | 203 |
| 2015 | 221 |
| 2016 | 182 |
| 2017 | 163 |
| 2018 | 159 |
| 2019 | 138 |
| 2020 | 139 |
| 2021 | 79 |
| 2022 | 12 |
| 2023 | 9 |
| 2024 | 4 |