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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1972 | 1 |
| 1975 | 3 |
| 1976 | 3 |
| 1977 | 2 |
| 1978 | 1 |
| 1979 | 7 |
| 1980 | 9 |
| 1981 | 5 |
| 1982 | 3 |
| 1983 | 4 |
| 1984 | 5 |
| 1985 | 8 |
| 1986 | 9 |
| 1987 | 5 |
| 1988 | 15 |
| 1989 | 20 |
| 1990 | 20 |
| 1991 | 32 |
| 1992 | 35 |
| 1993 | 24 |
| 1994 | 31 |
| 1995 | 25 |
| 1996 | 29 |
| 1997 | 31 |
| 1998 | 73 |
| 1999 | 41 |
| 2000 | 61 |
| 2001 | 65 |
| 2002 | 65 |
| 2003 | 105 |
| 2004 | 109 |
| 2005 | 147 |
| 2006 | 198 |
| 2007 | 193 |
| 2008 | 202 |
| 2009 | 301 |
| 2010 | 356 |
| 2011 | 354 |
| 2012 | 393 |
| 2013 | 431 |
| 2014 | 390 |
| 2015 | 501 |
| 2016 | 496 |
| 2017 | 554 |
| 2018 | 591 |
| 2019 | 616 |
| 2020 | 482 |
| 2021 | 427 |
| 2022 | 441 |
| 2023 | 366 |
| 2024 | 299 |