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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1972 | 1 |
| 1978 | 1 |
| 1979 | 3 |
| 1980 | 2 |
| 1981 | 1 |
| 1982 | 2 |
| 1983 | 4 |
| 1984 | 8 |
| 1985 | 5 |
| 1986 | 1 |
| 1987 | 9 |
| 1988 | 5 |
| 1989 | 8 |
| 1990 | 12 |
| 1991 | 12 |
| 1992 | 9 |
| 1993 | 20 |
| 1994 | 13 |
| 1995 | 23 |
| 1996 | 23 |
| 1997 | 38 |
| 1998 | 27 |
| 1999 | 28 |
| 2000 | 38 |
| 2001 | 44 |
| 2002 | 44 |
| 2003 | 65 |
| 2004 | 75 |
| 2005 | 91 |
| 2006 | 160 |
| 2007 | 242 |
| 2008 | 459 |
| 2009 | 354 |
| 2010 | 365 |
| 2011 | 456 |
| 2012 | 378 |
| 2013 | 236 |
| 2014 | 230 |
| 2015 | 250 |
| 2016 | 244 |
| 2017 | 362 |
| 2018 | 571 |
| 2019 | 498 |
| 2020 | 535 |
| 2021 | 362 |
| 2022 | 82 |
| 2023 | 59 |
| 2024 | 16 |