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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 |
|---|---|
| 1959 | 1 |
| 1960 | 1 |
| 1992 | 1 |
| 1995 | 1 |
| 1998 | 17 |
| 1999 | 58 |
| 2000 | 73 |
| 2001 | 76 |
| 2002 | 96 |
| 2003 | 113 |
| 2004 | 141 |
| 2005 | 152 |
| 2006 | 193 |
| 2007 | 267 |
| 2008 | 323 |
| 2009 | 351 |
| 2010 | 367 |
| 2011 | 489 |
| 2012 | 544 |
| 2013 | 565 |
| 2014 | 596 |
| 2015 | 608 |
| 2016 | 568 |
| 2017 | 601 |
| 2018 | 672 |
| 2019 | 621 |
| 2020 | 566 |
| 2021 | 376 |
| 2022 | 326 |
| 2023 | 240 |
| 2024 | 187 |