Era
1971-1980
141
1961-1970
104
1941-1950
70
1931-1940
67
1951-1960
65
1921-1930
33
20th century
28
1991-2000
25
1981-1990
22
2001-2010
16
To 1931
15
1945-
14
1913-1994
13
1969-1974
13
1974-1977
13
1945-1989
11
1805-1859
8
1989-
8
1971-1981
7
1977-1981
6
21st century
6
1961-1963
5
1980
5
1993-2001
5
Since 1945
5
1588-1679
4
1949-
4
19th century
4
2002-
4
Revolution, 1775-1783
4
1712-1778
3
1818-1883
3
1951-
3
1632-1704
2
1729-1797
2
1737-1809
2
1775-1783
2
17th century
2
1871-1918
2
18th century
2
1900-1999
2
1913-2006
2
1917-1963
2
1933-1945
2
1934-1983
2
1945-1953
2
1946-
2
1947-
2
1960-
2
1964
2
more ...