JavaScript chart by amCharts
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1946
2025
2023
2021
2019
2017
2015
2013
2011
2009
2007
2005
2003
2001
1999
1997
1995
1993
1991
1989
1987
1985
1983
1976
1968
1946
L
-40
-20
0
20
40
60
80
100
120
140
160
180
200
220
Chart
100%
Chart created using amCharts library
JavaScript chart by amCharts
Book
Book Chapter
Data Set
Doctoral Dissertation
Journal Article
Policy Brief
Project
Report
Report Series
Working Paper
Series
Book
2.6%
Book Chapter
7.0%
Data Set
0.6%
Doctoral Dissertation
0.6%
Journal Article
80.2%
Policy Brief
0.5%
Project
1.8%
Report
4.9%
Report Series
0.1%
Working Paper
1.6%
Legend
Chart
100%
Chart created using amCharts library
JavaScript chart by amCharts
Series
Chart
Chart created using amCharts library
JavaScript chart by amCharts
Series
L
L
-100
-50
0
50
100
150
200
250
300
350
Chart
Chart created using amCharts library
JavaScript chart by amCharts
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world
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125-156 items
94-124 items
63-93 items
32-62 items
0-31 items
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Chart created using amCharts library
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JavaScript chart by amCharts