Country name 1980 1981 1982 1983 1984
Bahrain 0 0
Puerto Rico 0 0 0 0 0
Singapore 1 1 1 1 1
United Kingdom 1 1 1 1 1
Hong Kong SAR, China 1 2 1 1 1
United States 2 2 2 2 2
Belgium 2 2 2 2 2
Venezuela, RB 2 2 2 2 2
Chile 3 2 3 3 3
Netherlands 3 3
Sweden 3 3 3 3 3
Canada 3 3 3 3 3
Israel 4 3 3 3 3
Denmark 4 4 3
Australia 4 5 4 4 4
Switzerland 5 5 5 5 5
San Marino 6 5 5 5 5
Norway 6 6 6 5 4
Costa Rica 6 6 6 5 12
France 7 7 7 7 6
Barbados 9 9 8 8
Trinidad and Tobago 9 10 6 6 8
Egypt, Arab Rep. 10 10 9 41 47
Finland 12 11 11 10 10
Japan 13 12 12 11 11
Guatemala 13 13
Italy 16 15 13 13 13
Hungary 19 17 18 18 18
Spain 18 18 17 17 17
Brazil 20 19 19 19
Cyprus 27 26 24 23 22
Bolivia 28 28 27 28 28
Portugal 35 34 32 29 29
Philippines 37 38 39 40 36
Romania 39 39 38 38 38
Korea, Rep. 39 39 36 33 30
Malaysia 44 42 37 35 35
Greece 42 38 40 39
Sri Lanka 51
Haiti 53 52 50 50
Thailand 74 67 64 65 66
Sao Tome and Principe 73 79 63 68 70
China
Colombia 1
Comoros
Pakistan
Congo, Dem. Rep.
South Sudan
Congo, Rep.
Cambodia
New Caledonia
Cote d'Ivoire
Austria 13 11
Croatia
Sierra Leone
Central African Republic
Sudan
Cuba
Curacao
Mauritania
Cabo Verde
Myanmar
Czech Republic
Nigeria 22
Burundi
Paraguay 0 1 1
Djibouti
Russian Federation
Dominica
Dominican Republic
Slovenia
Ecuador
St. Kitts and Nevis 14
Algeria
American Samoa
Burkina Faso
El Salvador 10
Turks and Caicos Islands
Equatorial Guinea 90
Malta
Eritrea
Mexico
Estonia
Morocco
Ethiopia
Nepal
Faeroe Islands
Nicaragua
Fiji
Bahamas, The
Bulgaria
Panama 6 6 4
Brunei Darussalam
Azerbaijan
French Polynesia
Qatar
Gabon
Samoa
Gambia, The
Serbia
Georgia
Sint Maarten (Dutch part)
Germany
Somalia
Ghana
Chad
Cameroon
St. Martin (French part)
Greenland
Swaziland
Grenada
Tajikistan
Guam
Togo
Botswana
Turkey 9 7 8
Guinea
Uganda
Guinea-Bissau
Cayman Islands
Guyana
Marshall Islands
Moldova
Mauritius
Mongolia
Micronesia, Fed. Sts.
Honduras
Monaco
Bosnia and Herzegovina
Montenegro
Bhutan
Mozambique
Iceland
Namibia
India
Bangladesh 9
Indonesia 54 54
New Zealand
Iran, Islamic Rep.
Niger
Iraq
Northern Mariana Islands
Ireland 5 5
Oman
Isle of Man
Palau
Bermuda
Papua New Guinea
Benin
Peru
Jamaica
Poland
Belize
Aruba
Jordan 3
Armenia
Kazakhstan
Rwanda
Saudi Arabia
Argentina
Kenya
Kiribati
Senegal
Korea, Dem. Rep.
Seychelles
Uzbekistan
Antigua and Barbuda
Belarus
Slovak Republic
Vietnam
Solomon Islands
West Bank and Gaza
South Africa
Zambia
Angola
Middle East (developing only)
Lesotho
St. Lucia
Liberia
St. Vincent and the Grenadines
Libya
Suriname
Liechtenstein
Andorra
Lithuania
Syrian Arab Republic 52 48
Luxembourg 5 5
Tanzania
Macao SAR, China
Timor-Leste
Macedonia, FYR
Tonga 3
Madagascar
Tunisia 30
Malawi
Turkmenistan
United Arab Emirates
Tuvalu
Afghanistan
Ukraine
Maldives
Albania
Mali
Uruguay 0
Kuwait 0
Vanuatu
Kyrgyz Republic
Lao PDR
Virgin Islands (U.S.)
Latvia
Yemen, Rep.
Lebanon
Zimbabwe

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