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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 |
|---|---|
| 1962 | 2 |
| 1969 | 2 |
| 1971 | 3 |
| 1972 | 3 |
| 1973 | 2 |
| 1974 | 1 |
| 1976 | 1 |
| 1977 | 1 |
| 1979 | 1 |
| 1981 | 1 |
| 1982 | 1 |
| 1983 | 1 |
| 1985 | 1 |
| 1991 | 1 |
| 1993 | 1 |
| 1999 | 1 |
| 2001 | 1 |
| 2002 | 1 |
| 2011 | 1 |
| 2012 | 10 |
| 2013 | 11 |
| 2014 | 24 |
| 2015 | 41 |
| 2016 | 116 |
| 2017 | 159 |
| 2018 | 161 |
| 2019 | 138 |
| 2020 | 167 |
| 2021 | 102 |
| 2022 | 3 |
| 2023 | 73 |
| 2024 | 63 |
| 2025 | 11 |