Country name 1986 1987 1988 1989 1990
Qatar 2 2 2 2 2
Kuwait 3 3 3 3 3
United Arab Emirates 3 3 3 3 3
St. Martin (French part) 3 3 3 3 3
Bahrain 4 4 4 3 3
Brunei Darussalam 4 4 4 4 4
Costa Rica 4 4 4 4 4
Guam 5 5 5 5 5
Virgin Islands (U.S.) 5 5 5 5 5
Hong Kong SAR, China 5 5 5 5 5
Singapore 5 5 5 5 5
Syrian Arab Republic 5 5 5 5 5
Malaysia 5 5 5 5 5
Panama 5 5 5 5 5
Venezuela, RB 5 5 5 5 5
Saudi Arabia 6 6 5 5 5
Belize 6 5 5 5 5
Libya 6 6 5 5 5
Jordan 6 6 5 5 5
Bahamas, The 6 6 6 6 5
Albania 6 6 6 6 6
French Polynesia 6 6 6 6 5
Korea, Rep. 6 6 6 6 6
Mexico 6 6 6 6 5
Thailand 6 6 6 6 6
Korea, Dem. Rep. 6 6 6 6 6
Tonga 6 6 6 6 6
Macao SAR, China 6 6 6 6 5
New Caledonia 6 6 6 6 5
St. Lucia 6 6 6 6 6
Oman 7 7 6 6 5
Colombia 6 6 6 6 6
Tunisia 7 6 6 6 6
Chile 7 6 6 6 6
Sri Lanka 6 6 6 6 6
Fiji 7 7 6 6 6
Japan 6 7 7 6 7
Vietnam 7 7 7 6 6
Dominican Republic 7 7 7 6 6
Paraguay 7 7 7 7 6
Ecuador 7 7 7 6 6
Israel 7 7 7 7 7
Mauritius 7 7 7 7 7
China 7 7 7 7 7
Micronesia, Fed. Sts. 7 7 7 7 7
St. Vincent and the Grenadines 7 7 7 7 7
Algeria 7 7 7 6 6
Cuba 7 7 7 7 7
Azerbaijan 7 7 7 6 6
Philippines 7 7 7 7 7
Uzbekistan 7 7 7 6 6
Lebanon 7 7 7 7 7
Antigua and Barbuda 7 7 7 7 7
Liechtenstein 7 7 7 6 7
Aruba 7 7 7 7 7
Bosnia and Herzegovina 7 7 7 7 8
Cyprus 7 7 7 7 7
Iraq 8 8 7 7 6
Honduras 8 7 7 7 7
Montenegro 7 7 7 7 7
Australia 7 8 7 7 7
Jamaica 7 7 7 7 6
Botswana 8 7 7 7 7
Suriname 7 7 7 7 7
Canada 7 7 7 7 7
Iceland 7 7 7 7 7
Puerto Rico 7 7 7 7 7
Macedonia, FYR 7 7 7 7 7
Seychelles 8 7 7 7 7
Brazil 8 8 7 7 7
Samoa 8 8 8 7 7
Trinidad and Tobago 8 8 8 8 8
Peru 8 8 8 7 7
Kazakhstan 7 8 8 8 8
Malta 8 8 8 7 8
Greenland 8 8 8 8 8
Morocco 9 8 8 8 7
Armenia 7 8 8 8 8
Indonesia 9 8 8 8 8
Nicaragua 9 9 8 8 7
Spain 8 8 8 8 9
South Africa 9 9 8 8 8
Argentina 8 8 8 8 8
New Zealand 8 8 8 8 8
Netherlands 9 8 8 9 9
Zimbabwe 9 8 8 9 9
Grenada 8 8 8 8 9
Cabo Verde 9 9 8 8 8
Vanuatu 9 9 8 8 8
Kyrgyz Republic 9 9 9 7 7
Turkey 9 9 9 8 8
Iran, Islamic Rep. 11 10 9 8 7
El Salvador 10 9 9 8 8
Faeroe Islands 8 8 9 8 8
United States 9 9 9 9 9
Turkmenistan 9 9 9 9 9
Ireland 10 9 9 9 9
Switzerland 9 9 9 9 10
Guyana 9 9 9 9 9
Guatemala 10 9 9 9 9
Namibia 10 9 9 9 9
Egypt, Arab Rep. 10 10 9 9 9
Greece 9 10 9 9 9
Georgia 9 9 9 9 9
France 10 10 10 9 9
Italy 10 9 10 9 10
Slovenia 10 10 10 9 9
Maldives 11 10 10 9 9
Portugal 10 10 10 10 10
Uruguay 10 10 10 10 10
Barbados 10 10 10 10 10
Tajikistan 10 10 10 10 10
Finland 10 10 10 10 10
Poland 10 10 10 10 10
Kenya 10 10 10 10 10
Slovak Republic 10 10 10 10 10
Swaziland 11 10 10 10 10
Belarus 10 10 10 10 11
Kiribati 11 11 10 10 10
Lithuania 10 10 10 10 11
Luxembourg 11 11 10 11 10
Moldova 11 10 10 10 10
Sao Tome and Principe 11 11 10 10 10
St. Kitts and Nevis 11 10 11 11
Belgium 11 11 11 11 10
Myanmar 11 11 11 10 10
Djibouti 11 11 11 11 11
Mongolia 11 11 11 10 10
Russian Federation 10 11 11 11 11
Papua New Guinea 11 11 11 11 10
Norway 11 11 11 11 11
Mauritania 11 11 11 11 11
Romania 11 11 11 11 11
Austria 12 11 11 11 11
Lesotho 12 12 11 11 10
Croatia 11 11 11 11 11
Bangladesh 12 12 11 11 10
Pakistan 12 11 11 11 11
Gabon 12 12 11 11 11
Solomon Islands 11 11 11 11 11
India 12 12 11 11 11
United Kingdom 12 11 11 12 11
Sweden 11 11 12 11 11
Denmark 11 11 12 12 12
Germany 12 12 12 12 12
Ghana 12 12 12 11 11
Ukraine 11 11 12 12 12
Estonia 12 12 12 12 12
Bulgaria 12 12 12 12 13
Senegal 13 12 12 12 11
Congo, Rep. 12 12 12 12 12
Czech Republic 13 12 12 12 13
Yemen, Rep. 13 13 12 12 12
Comoros 13 13 12 12 11
Latvia 12 12 12 12 13
Sudan 12 12 12 12 12
Togo 13 13 12 12 12
Cambodia 13 13 13 13 13
Hungary 14 13 13 14 14
Bolivia 14 14 13 13 13
Cote d'Ivoire 14 14 14 14 14
Haiti 14 14 14 13 13
Nepal 15 15 14 13 13
Cameroon 15 14 14 14 14
Lao PDR 15 15 14 14 14
Bhutan 16 15 14 14 13
Isle of Man 15 15
Gambia, The 16 15 15 15 14
Tanzania 15 15 15 15 15
Benin 16 16 15 15 14
Madagascar 16 16 16 16 15
Eritrea 17 16 16 16 15
Central African Republic 17 17 17 17 17
Timor-Leste 18 17 17 16 16
Afghanistan 18 18 17 16 16
Burkina Faso 17 17 17 17 17
Congo, Dem. Rep. 18 17 17 17 17
Burundi 18 18 18 18 18
Zambia 17 17 18 18 19
Guinea 19 19 18 18 17
Guinea-Bissau 19 19 18 18 18
Uganda 18 18 18 19 19
Liberia 18 18 18 18 18
Nigeria 18 18 18 18 18
Ethiopia 20 19 19 19 18
Equatorial Guinea 20 19 19 19 19
Chad 20 19 19 19 19
Somalia 19 19 19 20 20
Malawi 20 20 20 20 20
Mali 22 21 21 20 20
Mozambique 22 22 22 21 21
South Sudan 23 22 22 21 21
Niger 24 23 23 23 23
Rwanda 16 19 23 28 33
Angola 24 24 24 23 23
Sierra Leone 24 25 25 26 27
American Samoa
Cayman Islands
Northern Mariana Islands
Sint Maarten (Dutch part)
Bermuda 8 7
Curacao
Monaco
Serbia
San Marino
Marshall Islands 5
Andorra
Tuvalu
West Bank and Gaza 7
Turks and Caicos Islands
Palau 8
Dominica 6 9

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