Country name 1985 1986 1987 1988 1989
Qatar 2 2 2 2 2
Kuwait 3 3 3 3 3
St. Martin (French part) 3 3 3 3 3
United Arab Emirates 3 3 3 3 3
Bahrain 4 4 4 4 3
Brunei Darussalam 4 4 4 4 4
Costa Rica 4 4 4 4 4
Singapore 5 5 5 5 5
Guam 5 5 5 5 5
Hong Kong SAR, China 5 5 5 5 5
Marshall Islands 5
Virgin Islands (U.S.) 5 5 5 5 5
Venezuela, RB 5 5 5 5 5
Panama 5 5 5 5 5
Malaysia 5 5 5 5 5
Syrian Arab Republic 6 5 5 5 5
Belize 6 6 5 5 5
Albania 6 6 6 6 6
Bahamas, The 6 6 6 6 6
Jordan 6 6 6 5 5
French Polynesia 6 6 6 6 6
Libya 6 6 6 6 5
New Caledonia 6 6 6 6 6
Mexico 6 6 6 6 6
Saudi Arabia 6 6 6 6 5
Thailand 6 6 6 6 6
Chile 6 6 6 6 6
Tonga 6 6 6 6 6
Korea, Rep. 6 6 6 6 6
St. Lucia 6 6 6 6 6
Korea, Dem. Rep. 6 6 6 6 6
Macao SAR, China 7 6 6 6 6
Colombia 6 6 6 6 6
Dominica 6
Sri Lanka 6 6 6 6 6
Tunisia 7 7 6 6 6
Liechtenstein 6 7 7 7 6
Mauritius 7 7 7 7 7
Fiji 7 7 7 6 6
Oman 7 7 7 6 6
Paraguay 7 7 7 7 6
Vietnam 7 7 7 7 6
Cuba 6 7 7 7 7
Azerbaijan 7 7 7 7 6
Israel 7 7 7 7 7
Japan 6 6 7 7 6
Dominican Republic 7 7 7 7 6
China 7 7 7 7 7
St. Vincent and the Grenadines 7 7 7 7 7
Micronesia, Fed. Sts. 7 7 7 7 7
Ecuador 7 7 7 7 6
Antigua and Barbuda 7 7 7 7 7
Algeria 8 7 7 7 6
Aruba 7 7 7 7 7
Philippines 7 7 7 7 7
Iceland 7 7 7 7 7
Uzbekistan 7 7 7 7 6
Lebanon 7 7 7 7 7
Bosnia and Herzegovina 6 7 7 8 9
Botswana 8 7 7 7 7
Cyprus 7 7 7 7 7
Jamaica 7 7 7 7 7
Montenegro 7 7 7 7 7
Suriname 7 7 7 7 7
Canada 7 7 7 7 7
Puerto Rico 7 7 7 7 7
Seychelles 7 8 7 7 7
Honduras 8 8 7 7 7
Brazil 8 8 7 7 7
Australia 7 7 8 7 7
Macedonia, FYR 8 8 8 8 8
Kazakhstan 8 7 8 8 8
Trinidad and Tobago 8 8 8 8 8
Iraq 9 8 8 7 7
Armenia 7 7 8 8 8
Samoa 8 8 8 8 7
Peru 8 8 8 8 7
Morocco 9 8 8 8 7
Spain 8 8 8 8 8
Faeroe Islands 8 8 8 9 8
Greenland 8 8 8 8 8
Netherlands 9 9 8 8 9
Argentina 8 8 8 8 8
Indonesia 9 9 8 8 8
Malta 8 8 8 8 7
New Zealand 8 8 8 8 8
Grenada 9 8 8 8 8
South Africa 9 9 9 8 8
United States 9 9 9 9 9
Nicaragua 9 9 9 8 8
Vanuatu 9 9 9 8 8
Kyrgyz Republic 9 9 9 9 7
Cabo Verde 9 9 9 9 8
Zimbabwe 9 9 9 9 9
Ireland 9 10 9 9 9
Turkey 10 9 9 9 8
El Salvador 10 10 9 8 8
Turkmenistan 9 9 9 9 9
Guyana 9 9 9 9 9
Switzerland 9 9 9 9 9
Egypt, Arab Rep. 10 10 9 9 9
Georgia 9 9 9 9 9
Namibia 10 10 9 9 9
Italy 10 10 9 10 9
Portugal 10 10 10 10 10
Guatemala 10 10 10 9 9
Greece 9 9 10 9 9
France 10 10 10 10 9
Finland 10 10 10 10 10
Uruguay 10 10 10 10 10
Tajikistan 10 10 10 10 10
Belarus 10 10 10 10 10
Kenya 10 10 10 10 10
Kiribati 11 10 10 10 10
Slovak Republic 10 10 10 10 10
Slovenia 10 10 10 10 9
Iran, Islamic Rep. 12 11 10 9 8
Barbados 10 10 10 10 10
Poland 10 10 10 10 10
Lithuania 11 10 10 10 10
Sao Tome and Principe 11 11 10 10 10
St. Kitts and Nevis 10 11 10 11 11
Swaziland 11 11 10 10 10
Moldova 11 11 10 10 10
Russian Federation 11 10 11 11 11
Belgium 11 11 11 11 11
Norway 11 11 11 11 11
Pakistan 11 11 11 10 10
Djibouti 11 11 11 11 11
Papua New Guinea 11 11 11 11 11
Luxembourg 11 11 11 10 11
Myanmar 11 11 11 11 10
Maldives 12 11 11 10 10
Mauritania 11 11 11 11 11
Mongolia 12 11 11 11 10
India 11 11 11 11 11
Romania 11 11 11 11 11
Sweden 11 11 11 12 11
Bangladesh 12 12 11 11 10
Austria 12 12 11 11 11
Croatia 11 11 11 11 11
Denmark 11 11 11 12 12
United Kingdom 12 12 11 11 12
Solomon Islands 11 11 11 11 11
Ukraine 12 11 11 12 12
Bolivia 12 12 11 11 11
Lesotho 12 12 12 11 11
Germany 12 12 12 12 12
Gabon 12 12 12 11 11
Cambodia 12 12 12 12 12
Estonia 13 12 12 12 12
Congo, Rep. 12 12 12 12 12
Ghana 12 12 12 12 11
Bulgaria 12 12 12 12 12
Latvia 13 12 12 12 12
Czech Republic 13 13 12 12 12
Sudan 13 12 12 12 12
Senegal 14 13 12 12 12
Comoros 13 13 13 12 12
Togo 13 13 13 12 12
Yemen, Rep. 14 13 13 12 12
Hungary 14 14 13 13 14
Cote d'Ivoire 14 14 14 14 14
Nepal 15 14 14 13 13
Haiti 15 14 14 14 13
Cameroon 15 15 14 14 14
Lao PDR 15 15 15 14 14
Tanzania 15 15 15 15 15
Bhutan 16 16 15 14 14
Gambia, The 16 16 15 15 15
Madagascar 16 16 16 16 16
Benin 17 16 16 15 15
Eritrea 17 17 16 16 16
Uganda 17 17 17 17 17
Burkina Faso 17 17 17 17 17
Zambia 16 17 17 18 18
Timor-Leste 19 18 17 17 16
Central African Republic 17 18 18 18 18
Burundi 18 18 18 18 18
Guinea-Bissau 19 18 18 18 17
Congo, Dem. Rep. 18 18 18 18 18
Afghanistan 20 19 18 18 17
Liberia 18 18 18 18 18
Nigeria 18 18 18 18 18
Guinea 20 19 19 18 18
Malawi 20 19 19 19 18
Somalia 19 19 19 19 20
Ethiopia 20 20 19 19 19
Chad 20 20 20 19 19
Rwanda 16 17 20 24 29
Equatorial Guinea 21 21 21 20 20
Mozambique 21 21 21 21 21
Mali 22 22 21 21 20
South Sudan 23 23 22 22 21
Niger 24 24 24 23 23
Angola 24 24 24 24 24
Sierra Leone 24 24 24 25 25
Northern Mariana Islands
Cayman Islands
West Bank and Gaza
Bermuda 8
Monaco
Tuvalu
Serbia
Palau
Taiwan, China
Isle of Man 17 15 15
Turks and Caicos Islands
Andorra
Sint Maarten (Dutch part)
San Marino
Curacao
American Samoa

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