Era
1723-1790
1
1734-1784
1
1743-1826
1
1750-1918
1
1756-1842
1
1760-1860
1
1772-1837
1
17th century
1
17th century --
1
1887-1920
1
1893-1976
1
18th century
1
18th century --
4
1916-1995
1
1931-1997
1
1945
4
1945-
13
1945-1989
1
1945-1993
1
1950-
1
1956-
1
1960-
1
1960-1980
1
1960-1988
1
1964-1979
1
1966-
1
1971
1
1976-2000
2
1979-1997
1
1980-
4
1981
1
1985-1995
1
1986-
1
1988-
1
1989
2
1989-
1
1989-1994
1
1990
1
1990-
4
1991-
2
1997- --
2
19th century
3
19th century --
4
2000-
4
2000- --
1
20th century
11
20th century --
5
21st century
1
21st century --
1
6th cent. B.C.
1
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