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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1972 | 1 |
| 1974 | 1 |
| 1977 | 1 |
| 1981 | 1 |
| 1982 | 2 |
| 1985 | 1 |
| 1986 | 1 |
| 1987 | 4 |
| 1988 | 3 |
| 1989 | 4 |
| 1990 | 4 |
| 1991 | 1 |
| 1992 | 6 |
| 1993 | 8 |
| 1994 | 8 |
| 1995 | 13 |
| 1996 | 14 |
| 1997 | 18 |
| 1998 | 30 |
| 1999 | 47 |
| 2000 | 70 |
| 2001 | 88 |
| 2002 | 91 |
| 2003 | 77 |
| 2004 | 105 |
| 2005 | 130 |
| 2006 | 145 |
| 2007 | 200 |
| 2008 | 271 |
| 2009 | 288 |
| 2010 | 376 |
| 2011 | 479 |
| 2012 | 536 |
| 2013 | 583 |
| 2014 | 525 |
| 2015 | 524 |
| 2016 | 490 |
| 2017 | 512 |
| 2018 | 508 |
| 2019 | 533 |
| 2020 | 576 |
| 2021 | 639 |
| 2022 | 567 |
| 2023 | 520 |
| 2024 | 436 |