Era
1974-
1991-
Since 1974
27
1974-1991
23
1960-
11
20th century
9
1945-1991
7
1960-1991
7
1970-1991
7
21st century
6
1889-1974
5
1974-1995
5
1955-2012
4
1993-
4
Since 1960
4
Since 1889
3
Since 1900
3
Since 1991
3
1955-
2
1959-
2
1961-
2
1964-
2
1967-
2
1971-
2
1975-
2
1977-
2
1979-
2
1980-
2
1982-
2
1983-
2
1985-
2
1986-
2
1990-
2
Revolution, 1974
2
Since 1945
2
1889 - 1999
1
1889-1993
1
1889-1999
1
1900-1945
1
1900-2099
1
1941-1942
1
1941-1952
1
1952-1962
1
1960-,
1
1961-,
1
1962-
1
1962-1993
1
1964-,
1
1966-
1
1966-,
1
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