Era
20th century
36
1900-1999
17
21st century
16
1900 - 1999
9
1944-
8
2000-2099
8
2000 - 2099
6
1955-1983
4
1966-
4
1990-
4
Civil War, 1996-2006
4
Revolution, 1954-1962
4
1949-
3
1949-2014
3
1952-
3
1956-
3
1973-1988
3
1987-1993
3
1988-
3
Since 1966
3
1901-1993
2
1905-1961
2
1908-1973
2
1908-1998
2
1919-1965
2
1920-2014
2
1927-2002
2
1939-1945
2
1945
2
1948-1985
2
1950-2005
2
1958-
2
1959-
2
1968-
2
1975-
2
1979-
2
1980-
2
1982-
2
2001-
2
2001-2021
2
Civil War, 1994
2
Since 1900
2
Since 1979
2
Since 1990
2
-2012
1
1731-1802
1
1770-1842
1
1803-1966
1
1877-1945
1
1892-1970
1
more ...