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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1965 | 19 |
| 1966 | 36 |
| 1967 | 59 |
| 1968 | 76 |
| 1969 | 81 |
| 1970 | 75 |
| 1971 | 114 |
| 1972 | 149 |
| 1973 | 193 |
| 1974 | 265 |
| 1975 | 330 |
| 1976 | 414 |
| 1977 | 375 |
| 1978 | 496 |
| 1979 | 517 |
| 1980 | 672 |
| 1981 | 657 |
| 1982 | 641 |
| 1983 | 756 |
| 1984 | 719 |
| 1985 | 869 |
| 1986 | 793 |
| 1987 | 787 |
| 1988 | 720 |
| 1989 | 837 |
| 1990 | 855 |
| 1991 | 818 |
| 1992 | 706 |
| 1993 | 721 |
| 1994 | 637 |
| 1995 | 628 |
| 1996 | 546 |
| 1997 | 558 |
| 1998 | 493 |
| 1999 | 520 |
| 2000 | 520 |
| 2001 | 509 |
| 2002 | 440 |
| 2003 | 439 |
| 2004 | 396 |
| 2005 | 380 |
| 2006 | 389 |
| 2007 | 401 |
| 2008 | 391 |
| 2009 | 369 |
| 2010 | 347 |
| 2011 | 338 |
| 2012 | 337 |
| 2013 | 293 |
| 2014 | 265 |
| 2015 | 280 |
| 2016 | 228 |
| 2017 | 234 |
| 2018 | 174 |
| 2019 | 201 |
| 2020 | 168 |
| 2021 | 143 |
| 2022 | 109 |
| 2023 | 5 |