Era
21st century
70
20th century
69
1945-
48
1990-
38
1989-
34
1900-1999
28
2000-2099
26
2000-
20
Since 2000
18
1971-1990
17
1945-1989
16
Since 1945
12
1918-1945
10
Since 1989
10
2008-2009
9
1975-1985
8
Since 1990
8
2002-
7
1723-1790
5
1929
5
1933-1945
5
1969-1974
5
1981-1993
5
1993-2001
5
19th century
5
1907-1959
4
1985-1991
4
Since 1900
4
1737-1794
3
1750-1918
3
1900-2099
3
1913-1994
3
1945-1953
3
1971-
3
1977-1981
3
1980-
3
1985-1995
3
1991-
3
2000 - 2099
3
2005-2015
3
2009-2017
3
Empire, 30 B.C.-476 A.D.
3
1900 - 1999
2
1900-1918
2
1918-
2
1931-
2
1943-
2
1945-1971
2
1949-
2
1953-1961
2
more ...