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- United States131,986
- Canada7,793
- California2,220
- European Union countries1,938
- Europe1,811
- Developing countries1,782
- Washington (D.C.)1,686
- Alaska1,520
- Colorado1,361
- Soviet Union1,276
- Latin America1,266
- European Economic Community countries1,168
- China1,116
- New York (State)1,087
- Washington (State)1,074
- Texas1,059
- Oregon1,044
- Florida1,032
- Pennsylvania928
- New Mexico850