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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 4 |
| 1965 | 10 |
| 1966 | 37 |
| 1967 | 55 |
| 1968 | 117 |
| 1969 | 166 |
| 1970 | 171 |
| 1971 | 189 |
| 1972 | 322 |
| 1973 | 451 |
| 1974 | 423 |
| 1975 | 451 |
| 1976 | 450 |
| 1977 | 468 |
| 1978 | 412 |
| 1979 | 426 |
| 1980 | 475 |
| 1981 | 451 |
| 1982 | 409 |
| 1983 | 401 |
| 1984 | 477 |
| 1985 | 430 |
| 1986 | 404 |
| 1987 | 434 |
| 1988 | 436 |
| 1989 | 392 |
| 1990 | 381 |
| 1991 | 360 |
| 1992 | 323 |
| 1993 | 312 |
| 1994 | 263 |
| 1995 | 240 |
| 1996 | 224 |
| 1997 | 247 |
| 1998 | 188 |
| 1999 | 200 |
| 2000 | 186 |
| 2001 | 163 |
| 2002 | 158 |
| 2003 | 171 |
| 2004 | 185 |
| 2005 | 169 |
| 2006 | 174 |
| 2007 | 180 |
| 2008 | 188 |
| 2009 | 181 |
| 2010 | 119 |
| 2011 | 149 |
| 2012 | 150 |
| 2013 | 146 |
| 2014 | 151 |
| 2015 | 139 |
| 2016 | 117 |
| 2017 | 135 |
| 2018 | 129 |
| 2019 | 109 |
| 2020 | 105 |
| 2021 | 73 |
| 2022 | 20 |
| 2023 | 20 |
| 2024 | 4 |