Country name 1986 1987 1988 1989 1990
Italy 10 10 10 10 10
Denmark 11 11 12 12 12
Germany 11 11 11 11 11
Greece 11 11 11 10 10
Japan 11 11 11 10 10
Spain 11 11 11 11 10
Austria 12 11 12 12 12
Switzerland 12 12 12 12 13
Luxembourg 12 11 12 12 13
Belgium 12 12 12 12 12
Andorra 12 11 12 13 12
Hungary 12 12 12 12 12
Sweden 12 13 13 14 15
Finland 12 12 13 13 13
Norway 13 13 14 14 14
Portugal 13 12 12 12 12
Netherlands 13 13 13 13 13
Croatia 13 13 12 12 12
Liechtenstein 13 13 15 13 13
Czech Republic 13 13 13 12 13
Slovenia 13 13 13 12 11
Hong Kong SAR, China 13 13 13 12 12
United Kingdom 13 14 14 14 14
Bulgaria 13 13 13 13 12
France 14 14 14 14 13
Canada 15 14 15 15 15
Singapore 15 17 20 18 18
Australia 15 15 15 15 15
Malta 15 15 16 16 15
Korea, Rep. 15 15 15 15 15
Ukraine 16 15 14 13 13
United States 16 16 16 16 17
Estonia 16 16 16 16 14
Latvia 16 16 16 15 14
New Zealand 16 17 17 18 18
Iceland 16 17 19 18 19
Romania 17 17 17 16 14
Lithuania 17 16 16 15 15
Slovak Republic 17 16 16 15 15
Barbados 17 17 16 16 16
Poland 17 16 16 15 14
Belarus 17 16 16 15 14
Faroe Islands 17 17 18 20 20
Russian Federation 17 17 16 15 13
Bosnia and Herzegovina 17 17 16 15 15
Ireland 17 17 16 15 15
Cuba 17 17 17 17 17
Montenegro 18 17 17 17 16
Uruguay 18 18 18 18 18
Georgia 18 18 18 17 17
Mauritius 19 19 20 21 21
Antigua and Barbuda 19 19 19 19 19
Macedonia, FYR 19 19 19 18 18
Puerto Rico 19 20 19 19 19
Greenland 20 20 22 22 23
Cyprus 20 20 20 19 19
Korea, Dem. People’s Rep. 21 21 21 21 21
Aruba 21 21 21 20 20
Thailand 21 21 20 20 19
Moldova 22 21 20 20 19
Macao SAR, China 22 22 21 20 19
Argentina 22 22 22 22 22
China 22 23 22 22 21
Chile 23 23 22 22 22
St. Kitts and Nevis 23 24 21 22
Sri Lanka 23 22 22 21 21
Israel 23 23 23 22 22
Armenia 23 23 23 22 22
Virgin Islands (U.S.) 24 22 22 22 21
St. Martin (French part) 24 25 26 26 25
New Caledonia 25 26 25 24 26
Bahamas, The 25 25 24 24 24
Kazakhstan 26 26 25 23 22
Trinidad and Tobago 26 24 23 22 21
Albania 26 26 26 25 25
Seychelles 26 25 25 24 24
St. Vincent and the Grenadines 27 26 26 25 25
Lebanon 27 26 26 25 25
Guam 27 27 27 26 26
Qatar 28 26 25 24 23
Azerbaijan 28 27 26 26 26
Jamaica 28 27 27 26 25
Brazil 28 27 26 25 24
Panama 28 27 27 27 26
Kuwait 29 26 24 23 21
Costa Rica 29 28 28 27 27
Colombia 29 28 28 27 26
Indonesia 29 28 27 26 26
Suriname 29 29 28 28 28
Malaysia 29 29 29 28 28
United Arab Emirates 29 29 28 27 26
Turkey 30 29 28 27 26
Mexico 30 30 30 29 29
French Polynesia 30 30 30 29 28
Vietnam 30 30 30 29 29
Myanmar 31 30 29 28 27
Fiji 31 30 30 29 29
Venezuela, RB 31 31 30 30 29
Tunisia 31 30 29 28 25
St. Lucia 31 30 30 29 28
Brunei Darussalam 32 32 32 32 32
Dominican Republic 32 31 31 30 30
Ecuador 32 32 31 31 30
South Africa 32 31 31 30 29
Bahrain 32 32 31 30 29
Peru 32 32 31 31 30
Grenada 32 32 31 30 28
Tonga 33 32 32 31 31
Kyrgyz Republic 33 33 32 30 29
El Salvador 33 33 32 31 31
Morocco 33 32 31 30 29
Libya 34 33 31 30 29
Guyana 34 34 33 33 33
India 34 33 33 32 31
Philippines 35 34 34 33 33
Samoa 35 34 34 34 33
Paraguay 36 35 35 34 34
Papua New Guinea 36 36 35 35 35
Turkmenistan 36 36 36 36 35
Jordan 37 36 35 35 34
Micronesia, Fed. Sts. 37 36 35 35 34
Algeria 37 36 35 33 32
Vanuatu 37 37 37 36 36
Mongolia 37 36 35 34 32
Kiribati 37 37 37 37 37
Bolivia 37 37 36 36 35
Lesotho 38 37 36 36 35
Egypt, Arab Rep. 38 37 36 35 33
Uzbekistan 38 37 35 33 34
Gabon 38 38 38 37 37
Belize 38 38 37 36 36
Iraq 38 38 38 38 38
Botswana 39 38 37 36 35
Bangladesh 39 38 37 36 35
Congo, Rep. 39 39 39 38 38
Saudi Arabia 40 39 38 37 36
Namibia 40 39 39 39 38
Nicaragua 40 39 38 37 36
Syrian Arab Republic 40 39 38 37 36
Djibouti 40 40 40 40 40
Sao Tome and Principe 40 40 40 40 40
Nepal 40 40 39 39 39
Guatemala 40 40 39 39 38
Honduras 40 40 39 39 38
Haiti 41 40 39 38 37
Ghana 41 40 40 39 39
Iran, Islamic Rep. 41 39 37 35 33
Zimbabwe 41 40 39 38 37
Bhutan 41 41 40 39 38
Solomon Islands 41 41 41 40 40
Mauritania 41 41 41 41 41
Tajikistan 42 42 42 41 40
Central African Republic 42 42 42 41 41
Pakistan 42 42 42 41 40
Cabo Verde 43 42 42 41 40
Sudan 43 42 42 42 42
Lao PDR 43 43 43 43 43
Timor-Leste 44 43 43 43 43
Madagascar 44 45 45 45 45
Cote d'Ivoire 44 44 44 43 43
Togo 45 44 44 43 43
Oman 45 44 42 40 38
Tanzania 45 45 45 44 44
Nigeria 45 45 45 44 44
Comoros 45 45 44 43 43
Senegal 45 45 44 44 44
Eritrea 46 45 44 44 43
Mozambique 46 46 45 45 46
Cameroon 46 46 45 45 45
Equatorial Guinea 46 47 47 47 47
Kenya 46 45 44 43 42
Sierra Leone 47 47 47 47 46
Swaziland 47 46 45 44 43
Guinea-Bissau 47 47 46 46 45
Maldives 47 46 44 43 41
Benin 47 47 47 47 46
Zambia 47 47 47 47 46
Somalia 47 47 48 48 48
Guinea 47 47 47 47 47
Liberia 47 47 46 46 45
Congo, Dem. Rep. 47 48 48 48 48
South Sudan 48 48 48 48 47
Burkina Faso 48 48 48 48 47
Gambia, The 49 48 48 48 47
Ethiopia 49 48 48 48 48
Cambodia 49 47 46 44 42
Mali 49 49 49 49 49
Uganda 50 50 50 50 50
Afghanistan 50 50 49 49 49
Chad 50 51 51 51 51
Burundi 52 51 51 51 50
Rwanda 52 51 50 49 48
Malawi 52 51 51 50 50
Angola 53 53 53 53 53
Yemen, Rep. 54 54 53 53 52
Niger 55 55 55 55 55
Monaco
San Marino
Serbia
Northern Mariana Islands
Dominica 24 23
Sint Maarten (Dutch part)
American Samoa
Bermuda 15 15
Cayman Islands
Tuvalu
Isle of Man 12 12
Turks and Caicos Islands
West Bank and Gaza 45
Curacao
Marshall Islands 39
Palau 22

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