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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1966 | 2 |
| 1968 | 2 |
| 1969 | 27 |
| 1970 | 86 |
| 1971 | 87 |
| 1972 | 99 |
| 1973 | 137 |
| 1974 | 123 |
| 1975 | 135 |
| 1976 | 137 |
| 1977 | 155 |
| 1978 | 153 |
| 1979 | 173 |
| 1980 | 195 |
| 1981 | 230 |
| 1982 | 243 |
| 1983 | 244 |
| 1984 | 296 |
| 1985 | 291 |
| 1986 | 242 |
| 1987 | 227 |
| 1988 | 227 |
| 1989 | 259 |
| 1990 | 337 |
| 1991 | 289 |
| 1992 | 375 |
| 1993 | 318 |
| 1994 | 294 |
| 1995 | 527 |
| 1996 | 748 |
| 1997 | 788 |
| 1998 | 825 |
| 1999 | 750 |
| 2000 | 740 |
| 2001 | 710 |
| 2002 | 715 |
| 2003 | 672 |
| 2004 | 620 |
| 2005 | 696 |
| 2006 | 712 |
| 2007 | 666 |
| 2008 | 680 |
| 2009 | 593 |
| 2010 | 586 |
| 2011 | 665 |
| 2012 | 667 |
| 2013 | 674 |
| 2014 | 687 |
| 2015 | 669 |
| 2016 | 669 |
| 2017 | 522 |
| 2018 | 528 |
| 2019 | 504 |
| 2020 | 430 |
| 2021 | 344 |
| 2022 | 185 |
| 2023 | 129 |
| 2024 | 64 |