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Subject (Region)
- United States2,544
- Great Britain597
- Germany358
- Japan275
- France213
- Massachusetts200
- Canada186
- Italy172
- New York (State)163
- Spain137
- Europe125
- Developing countries116
- India115
- England100
- New York88
- Germany (West)86
- Indonesia84
- Mexico78
- Soviet Union77
- China73