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The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
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The https:// ensures that you are connecting to the
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and transmitted securely.
Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1966 | 35 |
| 1967 | 48 |
| 1968 | 57 |
| 1969 | 64 |
| 1987 | 1 |
| 1989 | 1 |
| 1994 | 1 |
| 2000 | 38 |
| 2003 | 1 |
| 2006 | 2 |
| 2008 | 166 |
| 2009 | 143 |
| 2010 | 9 |
| 2011 | 172 |
| 2012 | 170 |
| 2013 | 124 |
| 2014 | 110 |
| 2015 | 104 |
| 2016 | 120 |
| 2017 | 124 |
| 2018 | 106 |
| 2019 | 138 |
| 2020 | 172 |
| 2021 | 155 |
| 2022 | 77 |
| 2023 | 123 |
| 2024 | 60 |