Era
Since 1991
1991-
640
1991-2016
404
1980-1991
173
1980-
151
21st century
75
1980 - 1991
72
1980-1991-
67
1947-
32
2000-
31
2016-
28
21e siècle
9
Since 1947
9
2014-
7
21e siècle
6
1950-
5
1991-2099
5
2000-2099
5
1977-
4
2000 - 2099
4
20th century
3
India
3
Since 1980
3
1932-
2
1976-2000
2
1990-
2
1991
2
(19..- ...)
1
1900 - 2099
1
191-
1
1935-
1
1945-
1
1966-
1
1980
1
2000
1
20th
1
21st ed
1
Environmental aspects
1
Geschichte 1950-2008
1
Geschichte 1991-2003
1
Since 1966
1
Since 1977
1
Since 1990
1
Since 2000
1
Since 2016
1
To 1800
1
To1800
1
c 1990 to c 2000
1
c 2000 to c 2010
1