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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 |
|---|---|
| 1961 | 1 |
| 1963 | 1 |
| 1965 | 1 |
| 1966 | 1 |
| 1968 | 1 |
| 1971 | 2 |
| 1979 | 2 |
| 1981 | 2 |
| 1982 | 3 |
| 1983 | 1 |
| 1985 | 2 |
| 1986 | 1 |
| 1987 | 2 |
| 1988 | 3 |
| 1990 | 1 |
| 1992 | 1 |
| 1994 | 2 |
| 1995 | 1 |
| 1998 | 2 |
| 1999 | 1 |
| 2000 | 1 |
| 2004 | 5 |
| 2005 | 1 |
| 2006 | 1 |
| 2007 | 2 |
| 2008 | 1 |
| 2010 | 3 |
| 2012 | 2 |
| 2013 | 1 |
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 1 |
| 2022 | 1 |
| 2023 | 5 |