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Subject (Region)
- Japan444
- Italy388
- China269
- West Germany (1949-1990)236
- Greece211
- Poland165
- Philippines142
- Cuba110
- Canada95
- Great Britain94
- Yugoslavia94
- Spain90
- South Korea (1948- )80
- Austria79
- Czechoslovakia74
- Turkey74
- Hungary73
- Soviet Union (1922-1991)52
- France50
- Romania45