Era
20th century
37
1945-
11
1980-
9
19th century
7
21st century
7
1960-1980
6
1989-
5
1945-1989
4
1961-1969
4
18th century
3
1947-
3
1990-
3
1969-
2
1970-
2
1971-
2
1991-
2
2000-
2
1066-1485
1
17th century
1
1880-1969
1
1881-1938
1
1918-1933
1
1918-1960
1
1926-
1
1929
1
1945-1955
1
1945-1976
1
1945-1990
1
1945-1991
1
1945-19990
1
1951-
1
1970-1991
1
1974-1977
1
1976-2000
1
1977-1981
1
1979-
1
1982-
1
1993-
1
2oth century
1
Medieval period, 1066-1485
1
Republic, 1912-1949
1
To 1500
1
To 67 B.C.
1
Unification, 1990
1
Victoria, 1837-1901
1
to 1500
1