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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 |
|---|---|
| 1975 | 1 |
| 1994 | 1 |
| 1997 | 4 |
| 1998 | 27 |
| 1999 | 19 |
| 2000 | 24 |
| 2001 | 39 |
| 2002 | 41 |
| 2003 | 58 |
| 2004 | 63 |
| 2005 | 76 |
| 2006 | 74 |
| 2007 | 93 |
| 2008 | 96 |
| 2009 | 93 |
| 2010 | 133 |
| 2011 | 140 |
| 2012 | 172 |
| 2013 | 152 |
| 2014 | 143 |
| 2015 | 208 |
| 2016 | 196 |
| 2017 | 204 |
| 2018 | 201 |
| 2019 | 187 |
| 2020 | 113 |
| 2021 | 58 |
| 2022 | 42 |
| 2023 | 31 |
| 2024 | 137 |
| 2025 | 266 |