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- United States133,244
- Canada7,844
- California2,108
- European Union countries1,925
- Developing countries1,781
- Europe1,775
- Washington (D.C.)1,691
- Alaska1,496
- Soviet Union1,271
- Latin America1,266
- Colorado1,256
- European Economic Community countries1,146
- China1,115
- New York (State)1,068
- Washington (State)1,035
- Texas1,014
- Florida1,002
- Oregon977
- Pennsylvania918
- New Mexico824