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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 |
|---|---|
| 1955 | 1 |
| 1958 | 1 |
| 1959 | 1 |
| 1961 | 1 |
| 1962 | 1 |
| 1969 | 1 |
| 1973 | 1 |
| 1977 | 1 |
| 1978 | 1 |
| 1979 | 1 |
| 1980 | 1 |
| 1983 | 1 |
| 1984 | 1 |
| 1985 | 3 |
| 1986 | 1 |
| 1988 | 1 |
| 1990 | 1 |
| 1994 | 2 |
| 2001 | 2 |
| 2002 | 1 |
| 2003 | 1 |
| 2006 | 1 |
| 2008 | 2 |
| 2010 | 2 |
| 2011 | 3 |
| 2012 | 2 |
| 2014 | 1 |
| 2016 | 1 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 1 |
| 2022 | 1 |
| 2023 | 0 |