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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 |
| 1959 | 1 |
| 1961 | 1 |
| 1963 | 1 |
| 1964 | 1 |
| 1968 | 1 |
| 1969 | 2 |
| 1973 | 1 |
| 1977 | 1 |
| 1981 | 1 |
| 1987 | 1 |
| 1990 | 1 |
| 1993 | 1 |
| 1997 | 1 |
| 1999 | 4 |
| 2000 | 5 |
| 2001 | 1 |
| 2003 | 2 |
| 2011 | 1 |
| 2012 | 3 |
| 2013 | 2 |
| 2014 | 6 |
| 2015 | 3 |
| 2016 | 3 |
| 2017 | 4 |
| 2018 | 2 |
| 2019 | 3 |
| 2020 | 4 |
| 2021 | 2 |
| 2022 | 3 |
| 2024 | 1 |