Era
1997-
57
1979-1997
55
20th century
45
1941-1979
37
1925-1979
11
Revolution, 1979
8
21st century
6
1945-1979
5
1880-1967
4
1919-1980
4
1945-
4
1979-
4
1900-1999
3
1878-1944
2
1922-
2
Since 1900
2
Since 1979
2
Since 1997
2
1859-1952
1
1884-1972
1
1889-1976
1
1890-1969
1
1893-1971
1
1898-1968
1
1900 - 1999
1
1905-1911
1
1909-
1
1911-1925
1
1913-1994
1
1913-2006
1
1916-2000
1
1918-
1
1935-
1
1944-
1
1945-1976
1
1945-1989
1
1953-
1
1957-
1
1958-
1
1965-
1
1973-
1
1976-1994
1
1977-1981
1
1981-1989
1
1981-1990
1
1989-
1
1991-2003
1
1994-
1
19th century
1
2009
1
more ...