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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1959 | 1 |
| 1960 | 1 |
| 1961 | 4 |
| 1962 | 1 |
| 1967 | 1 |
| 1971 | 1 |
| 1974 | 1 |
| 1977 | 5 |
| 1978 | 14 |
| 1979 | 29 |
| 1980 | 37 |
| 1981 | 50 |
| 1982 | 62 |
| 1983 | 60 |
| 1984 | 78 |
| 1985 | 74 |
| 1986 | 79 |
| 1987 | 109 |
| 1988 | 115 |
| 1989 | 144 |
| 1990 | 165 |
| 1991 | 175 |
| 1992 | 155 |
| 1993 | 187 |
| 1994 | 166 |
| 1995 | 197 |
| 1996 | 159 |
| 1997 | 201 |
| 1998 | 187 |
| 1999 | 206 |
| 2000 | 218 |
| 2001 | 254 |
| 2002 | 249 |
| 2003 | 260 |
| 2004 | 270 |
| 2005 | 284 |
| 2006 | 278 |
| 2007 | 360 |
| 2008 | 358 |
| 2009 | 369 |
| 2010 | 378 |
| 2011 | 495 |
| 2012 | 533 |
| 2013 | 521 |
| 2014 | 551 |
| 2015 | 505 |
| 2016 | 480 |
| 2017 | 475 |
| 2018 | 455 |
| 2019 | 409 |
| 2020 | 444 |
| 2021 | 407 |
| 2022 | 326 |
| 2023 | 292 |
| 2024 | 256 |