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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 |
|---|---|
| 1971 | 1 |
| 1998 | 1 |
| 1999 | 1 |
| 2000 | 1 |
| 2003 | 2 |
| 2004 | 3 |
| 2005 | 3 |
| 2006 | 7 |
| 2007 | 23 |
| 2008 | 25 |
| 2009 | 29 |
| 2010 | 44 |
| 2011 | 154 |
| 2012 | 249 |
| 2013 | 279 |
| 2014 | 245 |
| 2015 | 192 |
| 2016 | 184 |
| 2017 | 181 |
| 2018 | 190 |
| 2019 | 160 |
| 2020 | 157 |
| 2021 | 158 |
| 2022 | 79 |
| 2023 | 59 |
| 2024 | 50 |
| 2025 | 15 |