Era
20th century
191
19th century
142
1900-1999
98
21st century
73
18th century
59
1800-1899
56
2000-2099
41
17th century
28
2000-
24
1800-1999
21
1991-
19
1700-1799
16
Since 2000
16
Since 1991
15
16th century
13
1990-
13
1700-1899
12
1976-2000
12
1989-
12
1960-
11
1600-1699
10
To 1500
10
1900-2099
9
1945-
9
2002-
8
Since 1945
8
Since 1990
8
1976-2002
7
Since 1960
7
Since 1989
7
1775-1865
6
1900 - 1999
6
1949-
6
Civil War, 1861-1865
6
1066-1485
5
1783-1865
5
1941-
5
1955-2011
5
1970-
5
1994-
5
2000 - 2099
5
Since 1976
5
1500-1599
4
1865-1945
4
1945-1990
4
1958-
4
1974-
4
1976-
4
1980-
4
2009-
4
more ...