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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1966 | 1 |
| 1967 | 2 |
| 1968 | 6 |
| 1969 | 3 |
| 1970 | 6 |
| 1971 | 2 |
| 1972 | 9 |
| 1973 | 5 |
| 1974 | 4 |
| 1975 | 4 |
| 1976 | 11 |
| 1977 | 5 |
| 1978 | 5 |
| 1979 | 4 |
| 1980 | 5 |
| 1981 | 1 |
| 1982 | 3 |
| 1983 | 3 |
| 1984 | 5 |
| 1986 | 1 |
| 1987 | 11 |
| 1988 | 6 |
| 1989 | 13 |
| 1990 | 23 |
| 1991 | 20 |
| 1992 | 36 |
| 1993 | 46 |
| 1994 | 86 |
| 1995 | 132 |
| 1996 | 193 |
| 1997 | 219 |
| 1998 | 262 |
| 1999 | 302 |
| 2000 | 322 |
| 2001 | 359 |
| 2002 | 446 |
| 2003 | 449 |
| 2004 | 460 |
| 2005 | 494 |
| 2006 | 568 |
| 2007 | 530 |
| 2008 | 528 |
| 2009 | 538 |
| 2010 | 526 |
| 2011 | 557 |
| 2012 | 591 |
| 2013 | 594 |
| 2014 | 523 |
| 2015 | 455 |
| 2016 | 415 |
| 2017 | 435 |
| 2018 | 407 |
| 2019 | 332 |
| 2020 | 280 |
| 2021 | 156 |
| 2022 | 73 |
| 2023 | 46 |
| 2024 | 22 |