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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 |
|---|---|
| 1957 | 3 |
| 1958 | 1 |
| 1964 | 2 |
| 1965 | 1 |
| 1969 | 1 |
| 1972 | 1 |
| 1974 | 1 |
| 1976 | 2 |
| 1980 | 1 |
| 1981 | 1 |
| 1984 | 1 |
| 1987 | 3 |
| 1989 | 3 |
| 1990 | 3 |
| 1991 | 4 |
| 1992 | 2 |
| 1994 | 1 |
| 1995 | 1 |
| 2000 | 1 |
| 2005 | 1 |
| 2010 | 1 |
| 2012 | 2 |
| 2014 | 1 |
| 2015 | 3 |
| 2017 | 3 |
| 2018 | 3 |
| 2019 | 6 |
| 2020 | 9 |
| 2021 | 9 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 3 |