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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 |
|---|---|
| 1951 | 1 |
| 1961 | 2 |
| 1964 | 1 |
| 2001 | 23 |
| 2002 | 46 |
| 2003 | 67 |
| 2004 | 85 |
| 2005 | 130 |
| 2006 | 164 |
| 2007 | 166 |
| 2008 | 195 |
| 2009 | 170 |
| 2010 | 187 |
| 2011 | 151 |
| 2012 | 190 |
| 2013 | 232 |
| 2014 | 171 |
| 2015 | 148 |
| 2016 | 164 |
| 2017 | 135 |
| 2018 | 136 |
| 2019 | 130 |
| 2020 | 125 |
| 2021 | 107 |
| 2022 | 117 |
| 2023 | 106 |
| 2024 | 25 |