Era
20th century
80
1918-1945
10
1897-1999
8
1936-1945
5
1945-
3
21st century
3
1874-1965
2
1936-
2
1945-1964
2
19th century
2
1819-1901
1
1869-1940
1
1879-1963
1
1895-1952
1
1926-
1
1945-1989
1
1960-
1
1979-
1
1980-
1
1989-
1
1990-
1
2000-
1
2002-
1
Unification, 1990
1
Victoria, 1837-1901
1
World War, 1939-1945
1