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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 1 |
| 1965 | 3 |
| 1966 | 7 |
| 1967 | 4 |
| 1968 | 4 |
| 1969 | 12 |
| 1970 | 10 |
| 1971 | 10 |
| 1972 | 21 |
| 1973 | 22 |
| 1974 | 33 |
| 1975 | 27 |
| 1976 | 24 |
| 1977 | 35 |
| 1978 | 34 |
| 1979 | 54 |
| 1980 | 59 |
| 1981 | 70 |
| 1982 | 72 |
| 1983 | 85 |
| 1984 | 94 |
| 1985 | 87 |
| 1986 | 123 |
| 1987 | 158 |
| 1988 | 176 |
| 1989 | 273 |
| 1990 | 255 |
| 1991 | 244 |
| 1992 | 314 |
| 1993 | 403 |
| 1994 | 476 |
| 1995 | 349 |
| 1996 | 373 |
| 1997 | 401 |
| 1998 | 405 |
| 1999 | 399 |
| 2000 | 507 |
| 2001 | 531 |
| 2002 | 604 |
| 2003 | 595 |
| 2004 | 580 |
| 2005 | 629 |
| 2006 | 678 |
| 2007 | 738 |
| 2008 | 721 |
| 2009 | 665 |
| 2010 | 855 |
| 2011 | 866 |
| 2012 | 926 |
| 2013 | 952 |
| 2014 | 896 |
| 2015 | 1032 |
| 2016 | 998 |
| 2017 | 998 |
| 2018 | 914 |
| 2019 | 954 |
| 2020 | 847 |
| 2021 | 751 |
| 2022 | 259 |
| 2023 | 140 |
| 2024 | 115 |