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Federal government websites often end in .gov or .mil. Before
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and transmitted securely.
Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1960 | 1 |
| 1977 | 1 |
| 1978 | 2 |
| 1980 | 4 |
| 1981 | 1 |
| 1987 | 1 |
| 1991 | 1 |
| 1992 | 3 |
| 1993 | 1 |
| 1994 | 2 |
| 1997 | 2 |
| 1998 | 9 |
| 1999 | 4 |
| 2000 | 4 |
| 2001 | 14 |
| 2002 | 12 |
| 2003 | 23 |
| 2004 | 26 |
| 2005 | 20 |
| 2006 | 45 |
| 2007 | 54 |
| 2008 | 76 |
| 2009 | 81 |
| 2010 | 104 |
| 2011 | 134 |
| 2012 | 158 |
| 2013 | 174 |
| 2014 | 206 |
| 2015 | 252 |
| 2016 | 250 |
| 2017 | 255 |
| 2018 | 326 |
| 2019 | 368 |
| 2020 | 462 |
| 2021 | 552 |
| 2022 | 558 |
| 2023 | 419 |