Era
2009-
41
1993-2001
16
1981-2001
13
1981-1993
11
20th century
9
2001-2009
6
21st century
5
1945-
4
1971-1981
3
19th century
3
1933-
2
1946-
2
1950-
2
1980-
2
1981-1989
2
1989-
2
2009-2017
2
2017-
2
Since 2009
2
1743-1826
1
1757-1804
1
1800-1999
1
18th century
1
1933-1945
1
1959-
1
1961-1971
1
1964-1979
1
1970-
1
1981-
1
1989-1993
1
2000-2099
1
2001-
1
2008-2009
1
2013
1
Appropriations and expenditures, 2018
1
Since 1945
1
Since 2017
1
To 1865
1