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Subject (Region)
- United States[remove]8,863
- Europe7,936
- Europe, Eastern600
- Soviet Union467
- Japan312
- Great Britain265
- Canada219
- Germany199
- Europe, Western149
- Russia (Federation)147
- European Union countries132
- France124
- China117
- Asia108
- Middle East107
- European Economic Community countries102
- Italy86
- Latin America84
- Africa74
- Europe, Central68