Era
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1949-
3
1949-1976
1
1952-
2
1955-2011
1
1956-
1
1957-
2
1959-
1
1960-
1
1960-1980
2
1961 - 1975
1
1962-
1
1963-
1
1964-1995
2
1965-
1
1965-1980
1
1966-
1
1967-
1
1968-
1
1969-
2
1974-
1
1978-
2
1979-
1
1980-
2
1981-1990
3
1992-
1
19th century
19
2000-2099
3
2021
1
20th century
31
21st century
6
Civil War, 1983-2005
1
Colonial period, ca. 1600-1775
2
Cultural Revolution, 1966-1976
1
German occupation, 1940-1945
2
Occupation, 1939-1945
1
Since 1960
1
b. 1860
1
b. 1876
1