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Federal government websites often end in .gov or .mil. Before
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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1967 | 1 |
| 1968 | 1 |
| 1973 | 1 |
| 1975 | 1 |
| 1997 | 1 |
| 1998 | 1 |
| 2000 | 3 |
| 2001 | 1 |
| 2002 | 3 |
| 2003 | 4 |
| 2004 | 4 |
| 2005 | 5 |
| 2006 | 4 |
| 2007 | 7 |
| 2008 | 11 |
| 2009 | 18 |
| 2010 | 27 |
| 2011 | 23 |
| 2012 | 34 |
| 2013 | 38 |
| 2014 | 26 |
| 2015 | 23 |
| 2016 | 25 |
| 2017 | 31 |
| 2018 | 35 |
| 2019 | 29 |
| 2020 | 37 |
| 2021 | 48 |
| 2022 | 37 |
| 2023 | 43 |
| 2024 | 46 |
| 2025 | 34 |