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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 |
|---|---|
| 1951 | 1 |
| 1959 | 1 |
| 1968 | 1 |
| 1971 | 1 |
| 1975 | 1 |
| 1986 | 1 |
| 1988 | 1 |
| 1991 | 1 |
| 1993 | 2 |
| 1994 | 3 |
| 1997 | 1 |
| 2001 | 2 |
| 2003 | 1 |
| 2004 | 1 |
| 2008 | 2 |
| 2010 | 1 |
| 2011 | 1 |
| 2012 | 2 |
| 2013 | 1 |
| 2014 | 3 |
| 2015 | 1 |
| 2022 | 1 |
| 2024 | 0 |