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The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
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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 |
|---|---|
| 2006 | 137 |
| 2007 | 1235 |
| 2008 | 2720 |
| 2009 | 4402 |
| 2010 | 6752 |
| 2011 | 13803 |
| 2012 | 23480 |
| 2013 | 31622 |
| 2014 | 30217 |
| 2015 | 29812 |
| 2016 | 23021 |
| 2017 | 21149 |
| 2018 | 18832 |
| 2019 | 16226 |
| 2020 | 16685 |
| 2021 | 16625 |
| 2022 | 16069 |
| 2023 | 14971 |
| 2024 | 4535 |