Country name 1986 1987 1988 1989 1990
Afghanistan
Albania
Algeria
American Samoa
Andorra
Angola
Antigua and Barbuda
Argentina 11 11 10 10 10
Armenia
Aruba
Australia 15 15 15 15 16
Austria 15 15 14 15 16
Azerbaijan
Bahamas, The
Bahrain
Bangladesh 3 3 2 2 4
Barbados 19 12 10 6 5
Belarus
Belgium
Belize 2 2
Benin
Bermuda
Bhutan
Bolivia 0 0 0 1 1
Bosnia and Herzegovina 13
Botswana
Brazil 18
Brunei Darussalam
Bulgaria
Burkina Faso
Burundi 0 0 0 0 0
Cabo Verde
Cambodia
Cameroon 1 0
Canada 19 18 19 20 23
Cayman Islands
Central African Republic 5 3 3 3 2
Chad
Chile 2 3 3 3 4
China 18 17 17 16 16
Colombia 5 6 7 6 6
Comoros
Congo, Dem. Rep.
Congo, Rep. 3 3 3
Costa Rica 3 3 3 3 3
Cote d'Ivoire 10 9 9 8
Croatia 18 18 18 19 13
Cuba 9 8 7 7
Curacao
Cyprus 4 4 4 4 4
Czech Republic
Denmark 18 17 17 17 18
Djibouti
Dominica
Dominican Republic
Ecuador 2 2 2 2 2
Egypt, Arab Rep. 6 15 7 6 6
El Salvador
Equatorial Guinea
Eritrea
Estonia
Ethiopia 1
Faroe Islands
Fiji 3 2 2 2 2
Finland 17 18 17 16 18
France 20 21 21 21 31
French Polynesia
Gabon
Gambia, The
Georgia
Germany
Ghana 0 1
Greece 6 6 6 7 7
Greenland
Grenada
Guam
Guatemala 1 1 1
Guinea
Guinea-Bissau
Guyana
Haiti
Honduras 1 1 1 1 1
Hong Kong SAR, China 6 6 8 8 12
Hungary 21 20 17 17 16
Iceland 3 4 4 2 2
India 18 16 15 17 17
Indonesia 7 7 7 8 9
Iran, Islamic Rep. 9 11 11 12 15
Iraq 5 2
Ireland 18 18 18 18 17
Isle of Man
Israel 12 10 9 10
Italy 23 22 24 25 24
Jamaica
Japan 23 22 23 24 25
Jordan 1 1 1 1 2
Kazakhstan
Kenya 7 7 5 5 5
Kiribati
Korea, Dem. People’s Rep.
Korea, Rep. 14 14 14 15 30
Kuwait 2 2 2 1 1
Kyrgyz Republic
Lao PDR
Latvia
Lebanon
Lesotho
Liberia
Libya
Liechtenstein
Lithuania
Luxembourg 11 12 12 12 13
Macao SAR, China 1 1 1 1 1
Macedonia, FYR 6
Madagascar 1
Malawi 2 6 7 7 1
Malaysia 5 5 6 8 9
Maldives
Mali
Malta 5 7 6 8 7
Marshall Islands
Mauritania
Mauritius 1 1 1 2 1
Mexico 15 16 16 21 18
Micronesia, Fed. Sts.
Moldova
Monaco
Mongolia 0
Montenegro
Morocco 5 5 3 4 4
Mozambique
Myanmar
Namibia
Nepal
Netherlands 13 12 12 13 13
New Caledonia
New Zealand
Nicaragua
Niger
Nigeria
Northern Mariana Islands
Norway 19 19 17 17 19
Oman
Pakistan 5 4 5 5 5
Palau
Panama 2 2 2 2 1
Papua New Guinea 9 9
Paraguay
Peru 5 6 7 5 5
Philippines 2 3 3 4 4
Poland 23 23 24 20 19
Portugal 8 7 8 8 7
Puerto Rico 5 6
Qatar
Romania 23 21 14
Russian Federation
Rwanda
Samoa
San Marino
Sao Tome and Principe
Saudi Arabia 2
Senegal 4 5
Serbia
Seychelles
Sierra Leone
Singapore 15 13 13 29 30
Sint Maarten (Dutch part)
Slovak Republic
Slovenia 16 16 13 13
Solomon Islands
Somalia 2
South Africa 13 13 15 14 14
South Sudan
Spain 16 19 19 19 18
Sri Lanka 1 1 3 3
St. Kitts and Nevis
St. Lucia
St. Martin (French part)
St. Vincent and the Grenadines
Sudan
Suriname
Swaziland 2 0 0 1 1
Sweden 27 26 26 26 29
Switzerland 18 18 17 17 18
Syrian Arab Republic
Tajikistan
Tanzania 5 6 6 3
Thailand 3 6 6 10
Timor-Leste
Togo
Tonga
Trinidad and Tobago 7 5 2 1
Tunisia 2 2
Turkey 8 9 10 9 11
Turkmenistan
Turks and Caicos Islands
Tuvalu
Uganda 1
Ukraine
United Arab Emirates
United Kingdom 22 22 22 23 23
United States 24 24 24 24 23
Uruguay 5 8 7 6 6
Uzbekistan
Vanuatu
Venezuela, RB 6 5 7 4 3
Vietnam
Virgin Islands (U.S.)
West Bank and Gaza
Yemen, Rep.
Zambia 2
Zimbabwe

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