Era
20th century
87
1993-
47
1900-1999
41
19th century
30
17th century
22
1979-
20
Since 1993
20
21st century
17
1945-
15
Since 1979
13
18th century
12
1997-2007
11
1989-
9
2000-2099
9
1800-1899
8
16th century
7
1929
7
1933-1945
7
1993-2001
7
Since 1945
7
1980-1993
6
1981-2001
6
1800-1999
5
1945-1989
5
1990-
5
1997-
5
1700-1899
4
1991-
4
Charles I, 1625-1649
4
Since 1990
4
1642-1649
3
1660-1688
3
1882-1945
3
1918-1933
3
1976-2000
3
1981-1993
3
2000-
3
2009-
3
2009-2017
3
Civil War, 1642-1649
3
Since 1900
3
1485-
2
1600-1699
2
1800-1918
2
1806-1873
2
1871-1918
2
1907-1973
2
1917-1945
2
1918-1945
2
1927-2003
2
more ...