Era
20th century
36
1945-
19
19th century
15
1918-1945
6
18th century
4
History
3
1760-1860
2
1928-1932
2
1066-1485
1
1868-1918
1
1883-1946
1
1905-1981
1
1912-1949
1
1914-1940
1
1918-
1
1919-1932
1
1933-1945
1
1938-1942
1
1944-2015
1
1956-
1
1960-
1
1964-
1
1964-1979
1
1974-
1
1975-
1
1976-
1
1979-1997
1
1989-
1
1990-
1
1994-
1
1997-
1
Medieval period, 1066-1485
1
To 1500
1
To 1865
1
To 1868
1
Unemployment
1
to 1500
1