Era
1971-1981
15
20th century
13
1981-1993
7
1900-1999
5
2001-2009
5
1941-1979
4
1971-
4
21st century
4
1924-
3
1981-2001
3
1993-2001
3
1865-
2
1913-1994
2
1913-2006
2
1975-1985
2
1977-1981
2
1980-
2
1989-
2
19th century
2
2000-
2
Since 1800
2
1899-1981
1
1918-1945
1
1933-1945
1
1935-
1
1942-
1
1945-
1
1945-1989
1
1960-1980
1
1961-1971
1
1969-1974
1
1974-1977
1
1980-1993
1
1981-
1
1993-
1
2000-2099
1
2001-
1
2009-
1
Appropriations and expenditures, 2018
1
Revolution, 1979
1
Since 1981
1
Since 2001
1