Era
21st century
8
1911-2006
7
20th century
7
1952-1970
6
1250-1517
5
-1260
3
1564-1616
3
1900 - 1999
3
1932-2015
3
1957-
3
2000 - 2099
3
Revolution, 1952
3
1250 - 1517
2
1900-1999
2
1952 - 1970
2
2003-2011
2
750-1258
2
1874-1956
1
1893-1981
1
1912-
1
1952
1
1981-
1
2000-2099
1
Since 1981
1
approximately 763-809
1
ca. 763-809
1