Country name 1986 1987 1988 1989 1990
San Marino 9 8 7 7 6
Austria 10 10 11 11 11
Denmark 12 11 12 11 11
Luxembourg 13 12 13
Israel 13 13 14 14 14
Qatar 13 14 12 12 12
Italy 14 13 13 13 12
Cuba 14 13 13 12 12
United States 14
Belgium 17
Brunei Darussalam 17 14 14
Canada 17 17 16 16 16
Netherlands 17 17 17 17 17
Australia 17 17 17 17
Portugal 17 16 15
Georgia 17
Samoa 18
Kuwait 18 18 18 18 18
Latvia 18 20 19 18 15
Bahamas, The 19
Kyrgyz Republic 19
Argentina 20 19 19
Bahrain 20 20 21 22 21
France 21 21 21 21
Solomon Islands 21 19
Uruguay 22 23 22 22
Iran, Islamic Rep. 22 28 29 30
Trinidad and Tobago 22 23 24 25
St. Kitts and Nevis 22 29 29 23 22
Panama 22 23 23 23 23
Tonga 22 22 24
Mauritius 23 22 22 22 21
Cyprus 23 23 22 22 21
Ghana 23 24 24 26 27
Suriname 23 23 23 23 22
Greece 23 23 22 21 20
Malta 24 24 23 22 23
Iraq 24 24 25 23
Japan 24 23 23 22 21
Uzbekistan 24 24 24
Gambia, The 24 29 28 31
Paraguay 25 25 25 25 25
United Arab Emirates 25 24 25 18 18
China 25 24 24 23 22
Lao PDR 25 27 28
Spain 25 26 25 23
Indonesia 25 24 24 24 23
Lithuania 25 20 19
Venezuela, RB 26 26
Kazakhstan 26 23 21
Syrian Arab Republic 26 25 26 27 26
Moldova 26 25 24
Singapore 26 26 26 26 26
Russian Federation 27 23 23
Oman 27 26 26 27 28
Ireland 27 27 27 28 27
Romania 27 27 27 25
Hong Kong SAR, China 28 27 27 27
Algeria 28 27 27 28 28
Morocco 28 27 26 25 25
Kiribati 29 29 30 28 29
Czech Republic 29 29 29 26 24
Colombia 29 30 30 30 30
Uganda 30 32 32 29 29
Mongolia 30 31 31 30 30
St. Lucia 30 30 31 31 29
Papua New Guinea 30 31 32 32 32
Philippines 31 31 32 33 33
Turkey 31 31 31 31 30
Jordan 31 29 30 28
Angola 31 33 33 33
Tunisia 32 32 31 30 30
Egypt, Arab Rep. 32 31 30 20 25
Botswana 32 32 32 32 32
Costa Rica 32 31 32 32 32
Nicaragua 32 32 34 32 33
Ecuador 32 32 31 29 30
Benin 33 33 33 35 31
Swaziland 33 33 33 32 33
Peru 33 32 31 29 29
Tanzania 33 33 33 33 35
Mexico 34 33 32 31 31
Mali 34 35 38 43 45
Vietnam 34 35 35 34 34
Comoros 35 35 36 38 36
Nepal 35 35 37 40 39
Jamaica 35 36 34 33 34
Guatemala 36 35
Cote d'Ivoire 36 36 36 37 36
Guinea 36 36 40 39 38
Niger 37 38 40 41
Bhutan 37 37 37
Cambodia 38 35 34 36 35
Haiti 38 36
Korea, Rep. 38 38 37 36 36
Cabo Verde 39 34 33 33 33
Zimbabwe 39 39 38 38 36
Sierra Leone 39 31 30 35
Honduras 39 35
Pakistan 39 40 41 41 41
Nigeria 42 44 41 37 41
Zambia 46 46 44 44
Gabon 46 47 46 48
Togo 46 50 52 55 56
Senegal 46 51 54 51 58
Bangladesh 48 48 58 60 63
Ethiopia 48 48 49 43 41
Rwanda 48 49 50 50 50
Mauritania 51 50 50 49 44
Cameroon 51 50 51 51 51
Myanmar 54 58 52 54 45
Lesotho 55 56 56 56 55
Burundi 56 62 71 69 66
Burkina Faso 58 68 65 57 55
Mozambique 61 62 56 58 55
Congo, Rep. 61 64 66 63 64
Central African Republic 66 60 63 70 90
Chad 71 68 67
Bermuda
Finland
Hungary
Marshall Islands
Chile
Germany
Guam
Fiji
Guyana
Faroe Islands
French Polynesia
Micronesia, Fed. Sts.
Timor-Leste
Liechtenstein
Malaysia 22 21 21 20
Monaco
Seychelles
Maldives
Slovak Republic
Sudan
South Africa
Estonia
Montenegro
St. Martin (French part)
Eritrea 41 38
Libya
Turks and Caicos Islands
India
Belize
Kenya
Malawi
Belarus
Andorra
Brazil
American Samoa
Sao Tome and Principe 30 29 35
Azerbaijan
Grenada 22 23 25
Liberia
Namibia
Congo, Dem. Rep. 37
Guinea-Bissau 25 25
Saudi Arabia
Antigua and Barbuda
Serbia
New Caledonia
Isle of Man
New Zealand 20 19 19 18
Sint Maarten (Dutch part)
Equatorial Guinea
Slovenia
Aruba
Somalia
Greenland
South Sudan
Northern Mariana Islands
Sri Lanka
Norway
Cayman Islands
El Salvador
St. Vincent and the Grenadines 18
Sweden
Barbados 18 18
Iceland
Palau
Switzerland
Dominican Republic
Tajikistan
Dominica
Thailand 20 20 20 20
Djibouti 44 44 44 44
Armenia
Curacao
Bosnia and Herzegovina
Bulgaria
Albania
Turkmenistan
Korea, Dem. People’s Rep.
Tuvalu
Puerto Rico
Ukraine
Poland
United Kingdom 20 20 20 20
Croatia
Bolivia
West Bank and Gaza
Vanuatu 26
Macao SAR, China
Macedonia, FYR
Virgin Islands (U.S.)
Madagascar 40 40 40
Yemen, Rep.
Afghanistan 36 41
Lebanon

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