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- United States133,419
- Canada7,863
- California2,229
- European Union countries1,941
- Europe1,812
- Developing countries1,782
- Washington (D.C.)1,697
- Alaska1,524
- Colorado1,361
- Soviet Union1,276
- Latin America1,267
- European Economic Community countries1,170
- China1,116
- New York (State)1,107
- Washington (State)1,075
- Texas1,061
- Oregon1,044
- Florida1,039
- Pennsylvania933
- New Mexico853