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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 |
|---|---|
| 1953 | 2 |
| 1954 | 2 |
| 1955 | 1 |
| 1956 | 1 |
| 1957 | 1 |
| 1958 | 1 |
| 1962 | 1 |
| 1965 | 1 |
| 1968 | 3 |
| 1972 | 1 |
| 1974 | 1 |
| 1975 | 3 |
| 1976 | 1 |
| 1979 | 1 |
| 1981 | 1 |
| 1983 | 1 |
| 1985 | 1 |
| 1994 | 1 |
| 1999 | 1 |
| 2001 | 1 |
| 2004 | 1 |
| 2013 | 1 |
| 2014 | 2 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 2 |
| 2022 | 2 |
| 2023 | 1 |
| 2025 | 1 |