Era
1981
26
20th century
23
1960-
15
21st century
11
18th century
7
19th century
7
1900-1999
6
2000-2099
6
Since 1960
6
1945-
5
1901-1945
4
1991
4
1648-1789
3
1901 - 1945
3
1648-1799
2
1700-1799
2
1890
2
1900 - 1999
2
1965-
2
1990
2
2000 - 2099
2
2010
2
2Oth century
2
1714-1779
1
1727-1790
1
1766
1
1769-1823
1
1796-1859
1
17th century
1
1800-1899
1
1836
1
1851
1
1869
1
1897
1
1945-1960
1
1970-
1
1971
1
1980
1
1995-1999
1
20 w
1
2000-talet
1
2001
1
2011
1
2020
1
20e siècle
1
21e siècle
1
Civil War, 1861-1865
1
Revolution, 1775-1783
1
Since 1965
1
To 1846
1