Era
1960-
13
1970-
11
1938-1997
9
20th century
6
1944-
5
1941-1995
4
2000-2099
4
21st century
4
1979-1983
3
Since 1960
3
1967-1970
2
1971-1980
2
1984-1993
2
1993-
2
1993-2007
2
Civil War, 1967-1970
2
1851-1899
1
1900-1999
1
1937-1998
1
1938-
1
1941-
1
1952-
1
1960-1975
1
1963-
1
1967 - 1970
1
1975-1979
1
1979 - 1983
1
1981-1990
1
19th century
1
2001 - 2010
1
2001-2010
1
2007-
1
21e siècle
1