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

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