Era
20th century
15
1933-1945
10
1945-1955
5
1945-1990
5
1945-
3
1885-1945
2
1913-1980
2
1918-1945
2
Blockade, 1948-1949
2
-1961
1
1782-1852
1
1782-1867
1
1858-1942
1
1869-1940
1
1871-
1
1875-1955
1
1882-1945
1
1893-1974
1
1897-1978
1
1904-1993
1
1910-1943
1
1911-1988
1
1913-1991
1
1915-1983
1
1917-2001
1
1918-1933
1
1943-1955
1
1945-1953
1
1945-1989
1
1990-
1
19th century
1
Allied occupation, 1918-1930
1
German occupation, 1940-1945
1
To 1933
1