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

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