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Subject (Region)
- United States29,798
- Great Britain1,180
- Germany1,040
- Canada901
- Japan881
- Europe775
- California735
- China640
- France638
- Soviet Union632
- Indonesia520
- Russia (Federation)483
- India471
- Italy469
- Developing countries413
- Africa399
- Australia359
- Mexico351
- Latin America297
- Brazil278