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- United States133,341
- Canada7,859
- California2,228
- European Union countries1,941
- Europe1,807
- Developing countries1,783
- Washington (D.C.)1,697
- Alaska1,518
- Colorado1,361
- Latin America1,267
- Soviet Union1,263
- European Economic Community countries1,170
- China1,109
- New York (State)1,107
- Washington (State)1,075
- Texas1,060
- Oregon1,044
- Florida1,039
- Pennsylvania932
- New Mexico852