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- United States15,833
- China6,742
- Great Britain4,797
- Japan4,448
- Germany4,113
- Italy3,852
- Indonesia3,657
- France3,524
- Europe3,233
- Latin America3,011
- Mexico2,910
- Soviet Union2,790
- India2,700
- Spain2,594
- Brazil2,523
- Africa2,411
- Developing countries2,119
- Argentina1,980
- Russia (Federation)1,977
- Canada1,853