Era
20th century
8
1945-
5
1900-1999
4
1902-1965
2
1948-
2
1989-
2
Since 1900
2
Since 1945
2
Since 1989
2
1421-1737
1
16th century
1
1700-1799
1
1735-1826
1
1744-1818
1
1774-1793
1
1775-1783
1
1775-1809
1
1783-1789
1
1783-1809
1
18th century
1
1900-2002
1
1919-1947
1
1945-1970
1
1945-1989
1
1948-1994
1
1950-1966
1
1955-1983
1
1968-1989
1
1981-1989
1
1983-2002
1
1985-1991
1
1993-
1
2000-2099
1
21st century
1
Coup d'état, 1976
1
Revolution, 1775-1783
1
Since 1948
1
Since 1993
1
Velvet Revolution, 1989
1