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- United States20,832
- China8,053
- Great Britain7,189
- Japan4,822
- Germany4,417
- France4,264
- Italy4,099
- Europe3,899
- Indonesia3,783
- Latin America3,383
- Mexico3,331
- India3,264
- Soviet Union3,032
- Africa3,019
- Brazil2,925
- Spain2,864
- Developing countries2,653
- Russia (Federation)2,272
- Argentina2,197
- Canada2,121