Era
20th century
56
1900-1999
29
21st century
22
1945-
17
2000-2099
13
1979-
8
1989-
8
19th century
7
Since 1945
7
1945-1989
6
Since 1900
6
Since 1979
6
1993-
5
1933-1945
3
1945-1964
3
1988-2002
3
1991-
3
Since 1989
3
1800-1999
2
1907-1973
2
1917-1945
2
1929
2
1945-1958
2
1949-
2
1960-1988
2
1961-1971
2
1980-1993
2
2002-
2
Revolution, 1954-1962
2
1800-1899
1
1837-1901
1
1837-2099
1
1850-1900
1
1863-1945
1
1864-1920
1
1879-1963
1
1883-1946
1
1886-1988
1
1900-1950
1
1900-1954
1
1907-1974
1
1950-1960
1
1951-
1
1964-1979
1
1971-
1
1973-
1
1980-
1
1981-1993
1
1981-2001
1
1981-2099
1
more ...