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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 |
|---|---|
| 1964 | 1 |
| 1965 | 6 |
| 1966 | 1 |
| 1968 | 4 |
| 1969 | 1 |
| 1970 | 1 |
| 1971 | 6 |
| 1972 | 1 |
| 1973 | 3 |
| 1974 | 1 |
| 1975 | 5 |
| 1978 | 4 |
| 1979 | 2 |
| 1980 | 1 |
| 1985 | 2 |
| 1986 | 1 |
| 1988 | 1 |
| 1990 | 2 |
| 1991 | 3 |
| 1992 | 2 |
| 1995 | 1 |
| 1997 | 1 |
| 2004 | 1 |
| 2005 | 2 |
| 2006 | 1 |
| 2011 | 2 |
| 2014 | 3 |
| 2015 | 2 |
| 2016 | 1 |
| 2019 | 1 |
| 2020 | 1 |
| 2021 | 1 |
| 2023 | 1 |
| 2024 | 0 |