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- United States15,516
- Great Britain5,566
- China3,424
- India2,788
- Europe2,292
- Africa2,119
- Developing countries2,002
- Canada1,643
- Japan1,623
- South Africa1,518
- Latin America1,389
- Soviet Union1,296
- Asia1,256
- Philippines1,150
- England1,142
- Ireland1,135
- Europe, Eastern999
- Mexico976
- Nigeria973
- Germany909