Era
2001-2010
2,170
1991-2000
1,014
1961-1970
794
1951-1960
692
1971-1980
648
1981-1990
621
1931-1940
368
1941-1950
359
To 1931
205
2011-2020
168
20th century
89
1921-1930
72
To 1951
67
1911-1920
37
To 1961
37
19th century
33
17th century
29
18th century
29
2001 - 2010
29
16th century
27
21st century
23
Civil War, 1861-1865
23
1830-1886
19
2011 - 2020
19
To 1901
19
1564-1616
17
1901-1910
17
15th century
16
1819-1892
13
2001-2009
12
1809-1865
11
1946-
10
Revolution, 1775-1783
10
1991 - 2000
9
2000-2099
9
1981 - 1990
8
1757-1827
7
1859-1936
7
500-1400
7
To 1921
7
1900-1999
6
1933-1945
6
1685-1750
5
1879-1955
5
1929-1968
5
1939-1945
5
2009-2017
5
1572-1631
4
1608-1674
4
1631-1700
4
more ...