Era
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1979-1997
2
1980-
4
1980-1984
1
1981-
9
1981-1995
2
1981-2001
10
1981-2009
3
1981-2011
1
1982-
8
1982-1994
4
1982-2006
2
1983-
2
1983-2002
1
1984-
1
1984-1993
1
1985-
6
1985-2002
1
1986-
4
1988-
2
1988-2002
2
1989-
10
1990
1
1990-
11
1991-
14
1992-
1
1993-
2
1993-2001
3
1993-2007
1
1994-
4
1995-2007
1
1997-
3
1998-
1
1999-
1
2000-
7
2000-2099
3
2001-
1
2001-2009
5
2002-
1
2003-
1
2007-2012
1
2009-
2
20th century
2
21st century
6
Since 1918
4
Since 1945
54
Since 1947
2
Since 1949
2
Since 1952
2
Since 1958
2
Since 1959
1
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