Era
1945-
51
21st century
31
20th century
25
19th century
20
2000-
14
1960-
10
1981-2001
8
1991-
7
1981-
6
1989-
5
1971-
4
1971-1981
4
1976-2000
4
1997-
4
2001-2009
4
18th century
3
1918-1945
3
1979-
3
1644-1912
2
1750-1918
2
1760-1860
2
1837-1901
2
1912-1949
2
1945-1964
2
1947-
2
1982-
2
1990-
2
1993-
2
To 1865
2
Unification, 1990
2
16th century
1
1783-1865
1
1789-1900
1
1796-1862
1
17th century
1
1800-1837
1
1808-1877
1
1815-1861
1
1817-1825
1
1891-1937
1
1918-
1
1936-
1
1942-
1
1945-1960
1
1945-1990
1
1945-1993
1
1949-
1
1957-1979
1
1958-
1
1958-1984
1
more ...