Era
20th century
72
1945-
37
1989-
28
1900-1999
26
1945-1989
25
20e siècle
24
21st century
24
1975-1985
13
1981-1989
11
1907-2004
9
1937-2006
9
1945-1991
8
1991-
8
2001-2009
8
21e siècle
8
2000-2099
7
Since 1989
7
1953-1961
6
1977-1981
6
1980-
6
1985-1991
6
1985-1995
6
2001-
6
1955-1965
5
1975-
5
1981-
5
1991-2003
5
2000-
5
Civil War, 2011-
5
1913-1994
4
1924-
4
1925-1953
4
1953-1985
4
1965-1975
4
1979-
4
1995-2005
4
Since 1945
4
Since 2001
4
1625-1649
3
17th century
3
1917-2017
3
1923-2023
3
1927-2019
3
1945-1955
3
1961-1963
3
1993-
3
1997-
3
Charles I, 1625-1649
3
Elizabeth, 1558-1603
3
1660-1688
2
more ...