Era
20th century
19
21st century
15
1946-
12
19th century
8
2017-2021
8
2000-2099
7
1900-1999
6
1945-1989
5
1980-
5
1991-
5
2001-2009
5
2021-
5
1783-1809
4
18th century
4
1945-
4
1989-
4
1993-2001
4
1751-1836
3
1783-1865
3
1861-1865
3
1869-1934
3
1934-
3
1979-
3
2017-
3
Since 1945
3
Since 1991
3
1700-1809
2
1800-1899
2
1809-1865
2
1856-1915
2
1955-1983
2
1960-
2
1968-
2
1976-2002
2
1978-1989
2
1989-1994
2
1993-
2
2002-
2
2016
2
2020
2
2020-
2
Civil War, 1861-1865
2
Since 1976
2
Since 1979
2
Since 1980
2
Since 2000
2
To 146 B.C.
2
To 1500
2
To 1865
2
1700 - 1809
1
more ...