Era
1926-2016
4
1928-1967
4
1959-1990
4
2001-2009
4
21st century
4
1970-
3
2000-2099
3
2001 - 2009
3
20th century
3
1959-
2
1972-
2
1986-
2
Since 1959
2
1610-1670
1
17th century
1
1900-1999
1
1955-
1
1960-1965
1
1965-1975
1
1966-
1
1973-
1
19th century
1
2001-2011
1
Boxer Rebellion, 1899-1901
1
Civil War, 1960-1965
1
Since 2001
1