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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 |
|---|---|
| 1954 | 1 |
| 1997 | 1 |
| 1998 | 1 |
| 1999 | 1 |
| 2000 | 1 |
| 2001 | 2 |
| 2002 | 30 |
| 2003 | 44 |
| 2004 | 54 |
| 2005 | 76 |
| 2006 | 80 |
| 2007 | 98 |
| 2008 | 116 |
| 2009 | 133 |
| 2010 | 168 |
| 2011 | 232 |
| 2012 | 269 |
| 2013 | 360 |
| 2014 | 399 |
| 2015 | 379 |
| 2016 | 399 |
| 2017 | 411 |
| 2018 | 456 |
| 2019 | 581 |
| 2020 | 733 |
| 2021 | 783 |
| 2022 | 957 |
| 2023 | 885 |
| 2024 | 371 |