1980
1985
1990
1995
2000
2005
2010
2015
0
5
10
15
20
25
30
35
40
Respondent Nation
United Kingdom
Canada
United States
Japan
Turkey
Thailand
France
Iraq
Jordan
Germany
Greece
South Africa
Italy
Norway
Top 5 Respondent Nations by Cumulative Cases (1980-Present)
Year
Cumulative Case Count
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