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- United States20,833
- China8,050
- Great Britain7,183
- Japan4,821
- Germany4,418
- France4,263
- Italy4,097
- Europe3,897
- Indonesia3,779
- Latin America3,374
- Mexico3,329
- India3,263
- Soviet Union3,032
- Africa3,014
- Brazil2,925
- Spain2,863
- Developing countries2,649
- Russia (Federation)2,270
- Argentina2,197
- Canada2,120