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Federal government websites often end in .gov or .mil. Before
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The https:// ensures that you are connecting to the
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and transmitted securely.
Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1955 | 2 |
| 1958 | 1 |
| 1961 | 1 |
| 1963 | 1 |
| 1964 | 2 |
| 1965 | 11 |
| 1967 | 1 |
| 1969 | 1 |
| 1971 | 1 |
| 1972 | 1 |
| 1973 | 1 |
| 1977 | 2 |
| 1978 | 1 |
| 1983 | 1 |
| 1986 | 1 |
| 1988 | 2 |
| 1992 | 1 |
| 1995 | 1 |
| 1997 | 3 |
| 2001 | 1 |
| 2002 | 4 |
| 2003 | 2 |
| 2005 | 3 |
| 2006 | 1 |
| 2007 | 1 |
| 2008 | 1 |
| 2010 | 1 |
| 2020 | 1 |
| 2021 | 1 |
| 2025 | 0 |