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- United States20,831
- China8,062
- Great Britain7,189
- Japan4,823
- Germany4,418
- France4,264
- Italy4,099
- Europe3,899
- Indonesia3,784
- Latin America3,387
- Mexico3,331
- India3,266
- Soviet Union3,032
- Africa3,020
- Brazil2,925
- Spain2,864
- Developing countries2,655
- Russia (Federation)2,270
- Argentina2,197
- Canada2,121