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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 |
|---|---|
| 1956 | 1 |
| 1968 | 2 |
| 1969 | 1 |
| 1972 | 2 |
| 1973 | 1 |
| 1975 | 1 |
| 1979 | 8 |
| 1983 | 1 |
| 1984 | 1 |
| 1985 | 1 |
| 1987 | 1 |
| 1988 | 3 |
| 1989 | 2 |
| 1990 | 1 |
| 1994 | 1 |
| 1997 | 4 |
| 1998 | 2 |
| 1999 | 1 |
| 2000 | 1 |
| 2001 | 3 |
| 2002 | 1 |
| 2005 | 1 |
| 2007 | 2 |
| 2011 | 1 |
| 2012 | 1 |
| 2015 | 2 |
| 2016 | 4 |
| 2017 | 3 |
| 2019 | 2 |
| 2022 | 1 |
| 2023 | 4 |
| 2024 | 3 |