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Federal government websites often end in .gov or .mil. Before
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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1958 | 1 |
| 1959 | 1 |
| 1960 | 1 |
| 1963 | 1 |
| 1966 | 2 |
| 1967 | 1 |
| 1970 | 1 |
| 1971 | 1 |
| 1972 | 1 |
| 1974 | 1 |
| 1979 | 1 |
| 1980 | 1 |
| 1984 | 2 |
| 1985 | 4 |
| 1986 | 3 |
| 1987 | 5 |
| 1988 | 1 |
| 1989 | 1 |
| 1990 | 1 |
| 1991 | 2 |
| 1992 | 2 |
| 1993 | 2 |
| 1994 | 2 |
| 1997 | 1 |
| 1998 | 1 |
| 1999 | 2 |
| 2005 | 1 |
| 2008 | 1 |
| 2009 | 1 |
| 2011 | 3 |
| 2012 | 1 |
| 2013 | 1 |
| 2016 | 1 |
| 2023 | 0 |