Era
20th century
43
1900-1999
13
1960-1980
11
1945-
8
1879-1962
6
19th century
5
21st century
5
1961-1969
4
1846-1906
2
1900 - 1999
2
1918-1932
2
1960-1970
2
1971-
2
1980-
2
Since 1945
2
1800-1899
1
1800-1933
1
18th century
1
1900-2099
1
1920-1996
1
1945-1970
1
1945-1989
1
1954-
1
1963-1969
1
1970-1991
1
2000-2099
1
2002
1
Alexander II, 1855-1881
1
Geschichte 1995-2006
1
Since 1900
1
Since 1971
1