Era
1951-
Since 1951
35
20th century
11
1865-1950
10
1918-2013
6
1936-
6
Since 1865
6
1918-
5
21st century
5
1865-
3
1889-1966
3
1932-
3
1939-
3
1956-
3
1900-1999
2
1917-
2
1917-2013
2
1924-
2
1928-
2
1942-
2
1946-
2
1947-
2
1949-
2
1951-1980
2
1952-
2
1953-
2
1954-
2
1955-
2
Revolution, 1775-1783
2
Since 1900
2
-1998
1
1644-1718
1
1734-1807
1
1741-1827
1
1743-1826
1
1772-1865
1
1775-1783
1
1781-1869
1
1815-1852
1
18th century
1
1908-
1
1909-
1
1917-1963
1
1918-2000
1
1919-
1
1922-
1
1926-1990
1
1930-
1
1930-2014
1
1930-2019
1
more ...