Era
1953-1961
73
1933-1945
56
1945-1953
45
1961-1963
38
20th century
32
1939-1945
28
1945-
24
1945-1989
24
1963-1969
21
1900-1999
18
1969-1974
17
1979-
16
Since 1945
15
1945-1990
14
1979-1990
13
Civil War, 1861-1865
13
1945-1955
9
1964-1968
9
1974-1977
9
1989-
9
2001-2009
9
1783-1865
8
Revolution, 1775-1783
8
War of 1812
8
1809-1817
7
20e siècle
7
1789-1809
6
1809-1865
6
1913-1921
6
1945 - 1961
6
1955-1957
6
1929-1933
5
1969-1977
5
Constitutional period, 1789-1809
5
1775-1783
4
1820
4
1830
4
1861-1865
4
1914-1918
4
1967-1973
4
1973-1993
4
1977-1981
4
1990-
4
1993-2001
4
2009-2017
4
Allied occupation, 1945-1952
4
Insurrection, 1849-1851
4
Since 1990
4
1789-1817
3
1866-1898
3
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