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- United States132,834
- Canada7,864
- California2,228
- European Union countries1,941
- Developing countries1,776
- Europe1,758
- Washington (D.C.)1,695
- Alaska1,523
- Colorado1,361
- Latin America1,265
- European Economic Community countries1,169
- New York (State)1,107
- China1,088
- Washington (State)1,075
- Texas1,061
- Oregon1,044
- Florida1,039
- Pennsylvania933
- New Mexico853
- Arizona826