Place
- Bulgaria, Europe22
- Germany8
- France7
- Ruse, Bulgaria7
- Sofia Province, Bulgaria7
- Russian Soviet Federative Socialist Republic, Asia6
- England5
- Greece5
- Vienna, Austria5
- Austria, Europe4
- Egypt, Africa4
- India, Asia4
- Istanbul, Turkey4
- Romania, Europe4
- Russia, Europe4
- Spain, Europe4
- Turkey, Europe/Asia4
- Varna, Bulgaria4
- America, North America3
- Hungary, Europe3