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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1957 | 1 |
| 1961 | 8 |
| 1962 | 2 |
| 1967 | 3 |
| 1968 | 3 |
| 1969 | 1 |
| 1989 | 8 |
| 1990 | 31 |
| 1991 | 17 |
| 1992 | 22 |
| 1993 | 26 |
| 1994 | 24 |
| 1995 | 18 |
| 1996 | 20 |
| 1997 | 30 |
| 1998 | 27 |
| 1999 | 32 |
| 2000 | 36 |
| 2001 | 65 |
| 2002 | 58 |
| 2003 | 94 |
| 2004 | 84 |
| 2005 | 122 |
| 2006 | 119 |
| 2007 | 140 |
| 2008 | 109 |
| 2009 | 104 |
| 2010 | 114 |
| 2011 | 80 |
| 2012 | 87 |
| 2013 | 94 |
| 2014 | 73 |
| 2015 | 68 |
| 2016 | 82 |
| 2017 | 59 |
| 2018 | 80 |
| 2019 | 66 |
| 2020 | 38 |
| 2021 | 31 |
| 2022 | 27 |
| 2023 | 22 |
| 2024 | 19 |