Era
1865-1918
1
1900-1999
4
1911-1977
1
1918-1933
1
1918-1945
2
1919-2007
1
1922-
1
1922-2010
1
1926-
1
1928-
1
1928-1997
1
1929-
1
1942-
2
1944-
1
1945-
4
1945-1981
1
1946-
4
1949-
1
1951-
1
1952-
1
1961-
1
1970-
1
1971-
2
1971-1981
4
1976-2000
1
1981-1990
1
1981-1993
3
1981-2001
3
1986-1991
1
1991-
1
1993-2001
3
19th century
1
2000 - 2099
1
2000-
2
2000-2099
2
2001-2009
2
2008-2009
2
2009-
12
2012
1
20th century
7
21st century
17
Demonstrations, 2010-
2
Since 1945
1
Since 1991
1
Since 2000
1