- Year 1950
- Country Sri Lanka
-
- Any
- Afghanistan 32
- Africa 15
- Albania 1
- Algeria 2
- Angola 3
- Antarctica 2
- Argentina 6
- Asia 1
- Australia 134
- Austria 9
- Azerbaijan 2
- Azores 1
- Bahrain 2
- Balkans 3
- Bangladesh 7
- Belarus 2
- Belgium 11
- Benin 1
- Bermuda 1
- Bhutan 1
- Bolivia 4
- Borneo 3
- Bosnia and Herzegovina 8
- Brazil 24
- Bulgaria 3
- Burkina Faso 2
- Burundi 3
- Cambodia 13
- Cameroon 3
- Canada 29
- Chagos Islands 1
- Chechnya 3
- Chile 7
- China 33
- Colombia 8
- Congo 1
- DRC 5
- Cote D'Ivoire 1
- Croatia 3
- Cuba 11
- Czech Republic 7
- Denmark 13
- Eastern Europe 9
- Ecuador 3
- Egypt 14
- El Salvador 4
- Ethiopia 9
- Europe 9
- Fiji 1
- Finland 8
- France 14
- Gabon 1
- Georgia 4
- Germany 24
- Ghana 4
- Greece 8
- Greenland 1
- Guatemala 6
- Guinea 2
- Guinea-Bissau 1
- Haiti 2
- Honduras 1
- Hong Kong 3
- Hungary 3
- Iceland 1
- India 54
- Indonesia 14
- Iran, Islamic Republic of 24
- Iraq 46
- Ireland 10
- Israel/Palestine 75
- Italy 11
- Jamaica 1
- Japan 23
- Jordan 3
- Kazakhstan 1
- Kenya 10
- North Korea 12
- South Korea 1
- Kosovo 3
- Kuwait 2
- Kyrgyzstan 2
- Lao Peoples Democratic Republic 1
- Lebanon 15
- Liberia 4
- Libyan Arab Jamahiriya 7
- Lithuania 3
- Malawi 1
- Malaysia 1
- Mali 4
- Malta 1
- Mauritania 3
- Mexico 5
- Middle East 1
- Mongolia 4
- Morocco 6
- Mozambique 3
- Myanmar 7
- Nauru 1
- Nepal 13
- Netherlands 31
- New Zealand 18
- Nicaragua 4
- Niger 4
- Nigeria 12
- North America 1
- Norway 8
- Pacific 2
- Pakistan 16
- Palestinian Territory, Occupied 4
- Papua New Guinea 7
- Peru 7
- Philippines 1
- Poland 10
- Portugal 4
- Qatar 2
- Romania 2
- Russian Federation 48
- Rwanda 4
- Saudi Arabia 4
- Senegal 2
- Serbia 7
- Sierra Leone 5
- Slovakia 1
- Slovenia 2
- Solomon Islands 2
- Somalia 6
- South Africa 62
- South Africa/France 1
- South America 3
- South Sudan 2
- Spain 14
- Sri Lanka 2
- Sudan 10
- Sweden 11
- Switzerland 13
- Syrian Arab Republic 21
- Tanzania 9
- Thailand 2
- Tibet 7
- Timor-Leste 12
- Togo 2
- Tunisia 3
- Turkey 12
- Turkey/Iraq 1
- Uganda 6
- Ukraine 38
- United Arab Emirates 5
- United Kingdom 120
- United States 335
- Uzbekistan 2
- Venezuela 5
- Vietnam 3
- Western Sahara 1
- World 156
- Yemen 4
- Zambia 2
- Zimbabwe 8