Region
- Developing countries
- United States
- Soviet Union 7 results
- Africa 1 results
- Africa, Sub-Saharan 1 results
- Asia 1 results
- England 1 results
- Europe 1 results
- Europe, Eastern 1 results
- European Economic Community countries 1 results
- France 1 results
- Latin America 1 results
- Russia 1 results
- Vietnam 1 results