Region
United States
31
China
4
Great Britain
3
New York (State)
3
Cambodia
2
New York
2
Switzerland
2
Africa, Southern
1
Asia, Southeastern
1
California
1
Chicago
1
Chicago (Ill.)
1
Chile
1
Cuba
1
Côte d'Ivoire
1
Germany
1
Guantánamo Bay Naval Base
1
Illinois
1
Massachusetts
1
Montana
1
North America
1
Soviet Union
1