Country name 1980 1981 1982 1983 1984
Botswana 0 0 0 0
Trinidad and Tobago 0 0 0 0 0
Costa Rica 0 0 0 0 0
Bahrain 0 0 0 0 1
Malta 0 0 0 9 9
Gabon 1 1 1 1 1
Japan 4 4 4 4 4
Brunei Darussalam 4 4 4 4 4
Albania 4 4 4 4 4
Netherlands 4 4 4 4 4
Iraq 5 5 5 5 5
Germany 4 5 5 5 5
Ghana 5 5 2 4 3
Singapore 5 5 5 6 6
Israel 4 5 5 4 3
Belgium 5 5 5 5 5
Ethiopia 8 5 9 9 7
Zambia 7 5 6 6 6
Romania 6 6 6 5 5
Finland 6 6 6 6 6
Yemen, Rep. 0 6 6 8 9
Switzerland 7 6 6 6 7
Korea, Rep. 6 6 6 7 6
Austria 6 6 6 6 6
France 7 6 7 7 7
Cyprus 6 7 7 6 6
United Arab Emirates 7 7 7 7 7
South Africa 8 7 7 8 6
Greece 7 7 8 8 8
Canada 9 7 8 7 7
United Kingdom 8 7 8 8 8
United States 9 7 8 8 7
Czech Republic 7 8 8 7 8
Cameroon 7 8 6 7 10
Guatemala 6 8 11 13 13
Sweden 9 8 8 9 8
Kuwait 8 8 8 8 8
Spain 9 8 9 9 9
China 8 8 8 8 8
Indonesia 9 8 10 14 15
Slovak Republic 8 8 8 9 9
Uruguay 12 9 10 9 11
Denmark 7 9 8 10 9
Italy 9 9 8 9 9
Norway 9 9 8 8 7
Venezuela, RB 14 9 16 15 12
Korea, Dem. Rep. 9 9 9 10 9
Iceland 9 10 10 9 8
Luxembourg 3 10 14 13 10
Cuba 17 10 10 9 9
Bulgaria 10 10 10 9 10
Poland 10 10 9 9 10
Iran, Islamic Rep. 7 10 12 10 11
Paraguay 6 10 20 20 9
Lebanon 10 10 10 10 10
Zimbabwe 9 10 11 10 11
Malaysia 10 11 11 11 10
Qatar 10 11 9 9 8
Thailand 10 11 10 11 11
Ireland 10 11 11 11 10
Australia 10 11 8 8 7
Brazil 12 11 12 11 11
Morocco 10 11 10 10 10
Chile 12 11 12 14 13
Hong Kong SAR, China 11 11 12 13 12
Philippines 2 12 13 13 15
Algeria 11 12 11 14 15
Turkey 12 12 12 13 12
Oman 12 12 12 12 12
Portugal 12 12 14 12 12
Hungary 10 12 13 13 13
Tanzania 14 12 15 18 21
Peru 13 12 11 9 10
Mexico 11 13 13 11 11
Tunisia 12 13 13 13 13
Argentina 13 13 13 14 14
Congo, Dem. Rep. 8 13 13 13 12
Egypt, Arab Rep. 13 13 8 9 14
Honduras 15 13 18 31 17
Kenya 15 13 15 14 13
New Zealand 13 14 13 12 12
El Salvador 14 14 15 14 14
Nicaragua 15 14 15 20 14
Saudi Arabia 7 14 11 9 5
Ecuador 15 15 18 18 20
Senegal 15 15 16 14 14
Jamaica 15 16 13 14 17
Bolivia 13 16 9 14 15
Cote d'Ivoire 16 16 16 16 16
Colombia 16 16 16 17 16
Jordan 19 16 16 13 13
Panama 16 16 17 15 18
Syrian Arab Republic 18 18 15 14 15
India 18 18 18 18 18
Sri Lanka 15 18 18 14 17
Vietnam 18 18 18 18 19
Mauritius 19 20 20 19 20
Sudan 14 20 20 25 3
Dominican Republic 21 21 32 33 25
Nepal 21 21 21 21 22
Myanmar 22 24 26 29 31
Angola 25 25 25 25 25
Haiti 26 25 26 27 27
Pakistan 29 26 25 25 25
Bangladesh 35 30 29 26 28
Libya 25 30 35 39 42
Congo, Rep. 9 31 12 41 14
Togo 31 34 26 35 15
Nigeria 29 49 24 24 42
Mozambique 39 78 8 12 16
Liechtenstein
Rwanda
Kiribati
Tuvalu
Macao SAR, China
Sierra Leone
Macedonia, FYR
Azerbaijan
Madagascar
Lithuania
Malawi
Afghanistan
Kazakhstan
Slovenia
Maldives
St. Vincent and the Grenadines
Mali
Liberia
Bosnia and Herzegovina
Estonia
Marshall Islands
American Samoa
Mauritania
San Marino
Cambodia
Serbia
Cayman Islands
Sint Maarten (Dutch part)
Micronesia, Fed. Sts.
Somalia
Moldova
St. Lucia
Monaco
Suriname
Mongolia
French Polynesia
Montenegro
Turkmenistan
Central African Republic
Ukraine
Andorra
Burkina Faso
Lao PDR
Virgin Islands (U.S.)
Namibia
Burundi
Isle of Man
Samoa
Chad
Sao Tome and Principe
New Caledonia
Croatia
Comoros
Seychelles
Kyrgyz Republic
Belarus
Niger
Barbados
South Sudan
Solomon Islands
Georgia
Cabo Verde
Northern Mariana Islands
Bahamas, The
Bhutan
St. Kitts and Nevis
Guyana
St. Martin (French part)
Dominica
Gambia, The
Tajikistan
Swaziland
Latvia
Curacao
Fiji
Taiwan, China
Tonga
Djibouti
Palau
Timor-Leste
Guinea-Bissau
Papua New Guinea
Aruba
Bermuda
Faeroe Islands
Guinea
Turks and Caicos Islands
Guam
Uganda
Benin 46
Armenia
Uzbekistan
Antigua and Barbuda
Grenada
Puerto Rico
Vanuatu
Greenland
Eritrea
Belize
West Bank and Gaza
Russian Federation
Equatorial Guinea
Lesotho

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