- Year 1991
- Country Zimbabwe
-
- Any
- Afghanistan 2
- Africa 4
- Albania 1
- Angola 2
- Antarctica 1
- Antigua and Barbuda 2
- Argentina 2
- Australia 28
- Austria 1
- Bhutan 1
- Borneo 1
- Bosnia and Herzegovina 1
- Brazil 7
- Burundi 1
- Cambodia 3
- Canada 7
- China 20
- Colombia 3
- DRC 2
- Costa Rica 1
- Croatia 1
- Cuba 3
- Czech Republic 1
- Denmark 1
- Djibouti 1
- Eastern Europe 1
- Ecuador 1
- Egypt 2
- Ethiopia 2
- Europe 2
- Fiji 1
- Finland 1
- France 5
- French Guiana 1
- Georgia 1
- Germany 1
- Greece 1
- Greenland 1
- Guatemala 1
- Haiti 1
- Hong Kong 2
- Hungary 1
- Iceland 1
- India 11
- Indonesia 8
- Iran, Islamic Republic of 3
- Iraq 9
- Ireland 1
- Israel/Palestine 11
- Italy 8
- Japan 5
- Kenya 6
- North Korea 2
- South Korea 2
- Lebanon 3
- Liberia 1
- Libyan Arab Jamahiriya 3
- Lithuania 1
- Madagascar 2
- Mali 2
- Marshall Islands 1
- Mexico 1
- Middle East 1
- Mongolia 1
- Nepal 1
- Netherlands 5
- New Zealand 3
- Niger 1
- North America 1
- Oman 1
- Pacific 1
- Pakistan 5
- Papua New Guinea 4
- Peru 1
- Philippines 5
- Portugal 1
- Russian Federation 6
- Saudi Arabia 1
- Senegal 1
- Serbia 1
- Sierra Leone 5
- Solomon Islands 1
- Somalia 2
- South Africa 11
- Spain 6
- Sudan 2
- Sweden 1
- Switzerland 5
- Syrian Arab Republic 4
- Taiwan 1
- Tanzania 1
- Thailand 5
- Uganda 1
- United Kingdom 13
- United States 71
- Uruguay 1
- Vanuatu 1
- Venezuela 3
- Vietnam 1
- World 32
- Zimbabwe 1