Country name 1980 1981 1982 1983
Denmark 3
United Kingdom 6
Netherlands 8
Germany 8
Luxembourg 9
France 13
Belgium 17
Ireland 21
Costa Rica 20 21 22 23
Italy 28
Panama 32 28
Greece 46
Equatorial Guinea 78
Pakistan
Bahrain
Liechtenstein
Bangladesh
Sri Lanka
Barbados
Moldova
Belarus
San Marino
Aruba
American Samoa
Belize
Maldives
Benin
Nepal
Bermuda
Poland
Bhutan
Sint Maarten (Dutch part)
Bolivia
Sweden
Bosnia and Herzegovina
West Bank and Gaza
Botswana
Macedonia, FYR
Brazil
Mauritania
Brunei Darussalam
Morocco
Bulgaria
Nigeria
Burkina Faso
Papua New Guinea
Burundi
Romania
Cabo Verde
Serbia
Cambodia
Somalia
Cameroon
St. Vincent and the Grenadines 18
Canada
Tuvalu
Cayman Islands
Vanuatu
Central African Republic
Bahamas, The
Chad
Algeria
Chile
Malawi
China
Malta
Colombia
Mexico
Comoros
Mongolia
Congo, Dem. Rep.
Myanmar
Congo, Rep.
Azerbaijan
Armenia
Norway
Cote d'Ivoire
Austria
Croatia
Peru
Cuba
Puerto Rico
Curacao
Rwanda
Cyprus
Saudi Arabia
Czech Republic
Sierra Leone
Argentina
Slovenia
Djibouti
South Sudan
Dominica
St. Lucia
Dominican Republic
Suriname
Ecuador
Australia
Egypt, Arab Rep.
Ukraine
El Salvador
Uruguay
Afghanistan
Vietnam
Liberia
Zambia 45
Eritrea
Lesotho
Estonia
Libya
Ethiopia 96
Lithuania
Faeroe Islands
Macao SAR, China
Fiji
Madagascar
Finland
Malaysia
Antigua and Barbuda
Mali
French Polynesia
Marshall Islands
Gabon
Mauritius
Gambia, The
Micronesia, Fed. Sts.
Georgia
Monaco
Angola
Montenegro
Ghana
Mozambique
New Caledonia
Namibia
Nicaragua
Albania
Greenland
New Zealand
Grenada
Niger
Guam 3
Northern Mariana Islands
Guatemala
Oman
Guinea
Palau
Guinea-Bissau
Guyana
Paraguay
Haiti
Philippines
Honduras
Portugal
Hong Kong SAR, China
Qatar
Hungary
Russian Federation
Iceland
Samoa
India
Sao Tome and Principe
Indonesia
Senegal
Iran, Islamic Rep.
Seychelles
Iraq
Singapore
Andorra
Slovak Republic
Isle of Man
Solomon Islands
Israel
South Africa
Syrian Arab Republic
Spain
Tanzania
St. Kitts and Nevis
Timor-Leste
St. Martin (French part)
Tonga
Sudan
Tunisia
Swaziland
Turkmenistan
Switzerland
Jamaica
Tajikistan
Japan
Thailand
Jordan
Togo
Kazakhstan
Trinidad and Tobago
Kenya
Turkey
Kiribati
Turks and Caicos Islands
Korea, Dem. Rep.
Uganda
Korea, Rep.
United Arab Emirates
Kosovo
United States
Kuwait
Uzbekistan
Kyrgyz Republic
Venezuela, RB
Lao PDR
Virgin Islands (U.S.)
Latvia
Yemen, Rep.
Lebanon
Zimbabwe

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