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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1965 | 2 |
| 1966 | 17 |
| 1967 | 16 |
| 1968 | 25 |
| 1969 | 14 |
| 1970 | 23 |
| 1971 | 33 |
| 1972 | 42 |
| 1973 | 67 |
| 1974 | 78 |
| 1975 | 76 |
| 1976 | 126 |
| 1977 | 113 |
| 1978 | 118 |
| 1979 | 93 |
| 1980 | 121 |
| 1981 | 136 |
| 1982 | 132 |
| 1983 | 152 |
| 1984 | 175 |
| 1985 | 158 |
| 1986 | 172 |
| 1987 | 150 |
| 1988 | 183 |
| 1989 | 180 |
| 1990 | 191 |
| 1991 | 213 |
| 1992 | 186 |
| 1993 | 199 |
| 1994 | 181 |
| 1995 | 234 |
| 1996 | 234 |
| 1997 | 230 |
| 1998 | 250 |
| 1999 | 227 |
| 2000 | 248 |
| 2001 | 277 |
| 2002 | 309 |
| 2003 | 319 |
| 2004 | 316 |
| 2005 | 342 |
| 2006 | 391 |
| 2007 | 408 |
| 2008 | 370 |
| 2009 | 395 |
| 2010 | 463 |
| 2011 | 515 |
| 2012 | 505 |
| 2013 | 488 |
| 2014 | 549 |
| 2015 | 558 |
| 2016 | 547 |
| 2017 | 504 |
| 2018 | 543 |
| 2019 | 521 |
| 2020 | 482 |
| 2021 | 418 |
| 2022 | 347 |
| 2023 | 102 |