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

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