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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1963 | 22 |
| 1964 | 16 |
| 1965 | 59 |
| 1966 | 22 |
| 1967 | 67 |
| 1968 | 81 |
| 1969 | 93 |
| 1970 | 70 |
| 1984 | 2 |
| 1991 | 1 |
| 1992 | 1 |
| 1995 | 1 |
| 1996 | 2 |
| 1997 | 1 |
| 1998 | 2 |
| 1999 | 1 |
| 2001 | 1 |
| 2003 | 1 |
| 2004 | 1 |
| 2005 | 6 |
| 2006 | 16 |
| 2007 | 58 |
| 2008 | 66 |
| 2009 | 73 |
| 2010 | 48 |
| 2011 | 72 |
| 2012 | 39 |
| 2013 | 47 |
| 2014 | 35 |
| 2015 | 40 |
| 2016 | 32 |
| 2017 | 25 |
| 2018 | 35 |
| 2019 | 41 |
| 2020 | 12 |
| 2021 | 22 |
| 2022 | 17 |
| 2023 | 16 |
| 2024 | 1 |