| Country | Number |
| Unknown | |
| Germany | |
| Austria | |
| Switzerland | |
| United States | |
| Sweden | |
| Italy | |
| United Kingdom | |
| France | |
| Netherlands | |
| Hungary | |
| Denmark | |
| Spain | |
| Luxembourg | |
| Poland | |
| New Zealand | |
| Greece | |
| Portugal | |
| China | |
| Australia | |
| Ireland | |
| Belgium | |
| Yugoslavia | |
| Canada | |
| Iran, Islamic Republic of | |
| Europe | |
| Turkey | |
| Finland | |
| Thailand | |
| Israel | |
| Moldova, Republic of | |
| Norway | |
| Russian Federation | |
| Armenia | |
| Japan |