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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1960 | 1 |
| 1963 | 2 |
| 1964 | 1 |
| 1970 | 3 |
| 1971 | 12 |
| 1972 | 3 |
| 1973 | 1 |
| 1974 | 1 |
| 1975 | 1 |
| 1976 | 1 |
| 1987 | 2 |
| 1988 | 7 |
| 1989 | 5 |
| 1990 | 6 |
| 1991 | 3 |
| 1992 | 2 |
| 1993 | 4 |
| 1994 | 8 |
| 1995 | 12 |
| 1996 | 13 |
| 1997 | 20 |
| 1998 | 21 |
| 1999 | 32 |
| 2000 | 41 |
| 2001 | 58 |
| 2002 | 72 |
| 2003 | 69 |
| 2004 | 97 |
| 2005 | 98 |
| 2006 | 117 |
| 2007 | 179 |
| 2008 | 218 |
| 2009 | 247 |
| 2010 | 305 |
| 2011 | 331 |
| 2012 | 443 |
| 2013 | 496 |
| 2014 | 508 |
| 2015 | 552 |
| 2016 | 575 |
| 2017 | 600 |
| 2018 | 606 |
| 2019 | 574 |
| 2020 | 696 |
| 2021 | 729 |
| 2022 | 692 |
| 2023 | 448 |