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Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
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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 |
|---|---|
| 1964 | 1 |
| 1965 | 2 |
| 1966 | 1 |
| 1967 | 1 |
| 1968 | 6 |
| 1969 | 10 |
| 1970 | 11 |
| 1971 | 3 |
| 1972 | 10 |
| 1973 | 6 |
| 1974 | 6 |
| 1975 | 4 |
| 1976 | 3 |
| 1978 | 1 |
| 1979 | 2 |
| 1980 | 1 |
| 1981 | 5 |
| 1982 | 7 |
| 1984 | 2 |
| 1985 | 2 |
| 1986 | 6 |
| 1987 | 2 |
| 1994 | 1 |
| 2002 | 3 |
| 2003 | 4 |
| 2004 | 6 |
| 2005 | 5 |
| 2006 | 2 |
| 2007 | 1 |
| 2008 | 1 |
| 2009 | 2 |
| 2025 | 0 |