Era
1945-
11
20th century
11
1991-
5
19th century
4
1976-2000
3
1981-
3
2000-
3
1971-
2
1981-2001
2
1989-
2
1997-
2
To 1865
2
1815-1861
1
1865-1918
1
1883-1950
1
1891-1937
1
1918-1961
1
1945-1989
1
1947-
1
1958-
1
1960-
1
1961-
1
1976-
1
1976-2002
1
1980-
1
1990-
1
2001-2009
1
2002-
1
2007-
1
20th Century
1
21st century
1
Medieval, 500-1500
1
Revolution, 1917-1921
1
To 1492
1