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The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
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The https:// ensures that you are connecting to the
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and transmitted securely.
Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1946 | 1 |
| 1950 | 1 |
| 1960 | 2 |
| 1962 | 1 |
| 1965 | 1 |
| 1975 | 1 |
| 1976 | 1 |
| 1978 | 2 |
| 1979 | 2 |
| 1980 | 1 |
| 1981 | 1 |
| 1983 | 1 |
| 1987 | 1 |
| 1989 | 1 |
| 1990 | 1 |
| 1993 | 1 |
| 1999 | 2 |
| 2001 | 2 |
| 2003 | 2 |
| 2004 | 1 |
| 2013 | 1 |
| 2016 | 1 |
| 2018 | 1 |
| 2019 | 3 |
| 2021 | 1 |
| 2024 | 1 |