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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1959 | 1 |
| 1961 | 2 |
| 1962 | 1 |
| 1965 | 1 |
| 1966 | 8 |
| 1967 | 4 |
| 1968 | 7 |
| 1969 | 4 |
| 1970 | 10 |
| 1971 | 20 |
| 1972 | 27 |
| 1973 | 27 |
| 1974 | 33 |
| 1975 | 34 |
| 1976 | 31 |
| 1977 | 25 |
| 1978 | 19 |
| 1979 | 15 |
| 1980 | 28 |
| 1981 | 28 |
| 1982 | 29 |
| 1983 | 37 |
| 1984 | 46 |
| 1985 | 90 |
| 1986 | 74 |
| 1987 | 109 |
| 1988 | 110 |
| 1989 | 183 |
| 1990 | 220 |
| 1991 | 240 |
| 1992 | 249 |
| 1993 | 335 |
| 1994 | 452 |
| 1995 | 477 |
| 1996 | 397 |
| 1997 | 411 |
| 1998 | 438 |
| 1999 | 504 |
| 2000 | 455 |
| 2001 | 420 |
| 2002 | 483 |
| 2003 | 455 |
| 2004 | 374 |
| 2005 | 384 |
| 2006 | 416 |
| 2007 | 476 |
| 2008 | 454 |
| 2009 | 371 |
| 2010 | 404 |
| 2011 | 368 |
| 2012 | 305 |
| 2013 | 298 |
| 2014 | 280 |
| 2015 | 280 |
| 2016 | 214 |
| 2017 | 225 |
| 2018 | 206 |
| 2019 | 167 |
| 2020 | 182 |
| 2021 | 105 |
| 2022 | 22 |
| 2023 | 9 |
| 2024 | 11 |