Country name 1984 1985 1986 1987 1988
Ethiopia 4 4 4 4 4
Uganda 4 4 4 4 4
Poland 4 4 4 4 4
Yemen, Rep. 4 4 4 5 5
Tanzania 5 5 5 5 5
Mozambique 5 5 5 5 5
Niger 5 5 5 5 5
Kenya 5 6 6 6 6
Burkina Faso 5 5 6 6 6
Cambodia 5 5 6 6 6
Vietnam 7 6 6 6 6
Kazakhstan 7 7 7 7 7
Algeria 8 7 7 7 7
Madagascar 7 7 8 8 8
Chad 8 8 8 8 8
Sudan 7 7 8 8 8
Bangladesh 7 8 8 8 8
Myanmar 8 8 8 8 8
Romania 9 9 9 9 9
Mali 8 8 8 9 9
China 8 9 9 9 9
Germany 9 9 9 9 9
Zimbabwe 9 9 9 9 9
Zambia 9 9 9 9 9
India 9 9 9 9 10
Guatemala 10 10 10 9 9
Indonesia 9 9 9 10 10
Malaysia 10 10 10 10 10
Thailand 10 10 10 10 10
Uzbekistan 11 11 11 11 10
Afghanistan 10 10 11 11 12
Honduras 11 11 11 11 11
Czech Republic 12 12 12 12 12
Nigeria 11 11 12 12 12
Korea, Dem. Rep. 11 12 12 12 12
Sweden 12 12 12 12 12
Ukraine 12 12 12 12 12
Ghana 12 12 12 12 13
Netherlands 13 13 13 13 13
Congo, Dem. Rep. 12 13 13 13 13
Bulgaria 13 13 13 13 13
Cameroon 12 13 13 13 14
Switzerland 13 13 13 14 14
Somalia 12 12 13 14 15
Togo 13 14 14 14 14
Philippines 14 14 14 14 14
Haiti 13 14 14 15 15
Belarus 15 15 15 15 15
Guinea 15 15 15 15 15
Pakistan 15 15 15 15 15
Finland 15 15 15 16 16
Belgium 17 17 17 17 17
Cote d'Ivoire 17 17 17 17 17
Nicaragua 17 17 17 17 17
El Salvador 16 16 17 17 17
Russian Federation 17 17 17 17 17
Angola 16 17 17 17 18
Morocco 18 18 18 18 18
Senegal 18 18 18 18 18
Italy 19 19 19 19 19
Hungary 19 19 19 19 19
Cuba 20 20 20 20 20
Libya 20 20 20 20 20
Austria 20 20 20 20 20
Denmark 21 21 21 20 20
Dominican Republic 21 21 21 21 21
Spain 22 22 22 22 22
Egypt, Arab Rep. 22 22 22 22 22
France 22 22 22 22 22
Iran, Islamic Rep. 24 24 24 23 23
Costa Rica 23 23 23 23 24
Bolivia 22 23 23 24 24
Turkey 23 23 24 24 24
Azerbaijan 25 25 25 25 24
Paraguay 25 25 25 25 25
Georgia 25 25 25 25 25
New Zealand 25 25 25 25 26
Mongolia 26 26 26 26 26
Ecuador 25 26 26 26 26
United Arab Emirates 25 26 26 26 26
Ireland 26 26 26 26 26
Peru 26 26 26 26 27
United Kingdom 27 27 27 26 26
South Africa 27 27 27 27 27
Jordan 28 28 28 27 27
Congo, Rep. 28 29 29 29 29
Iraq 29 30 30 30 30
Saudi Arabia 28 29 30 30 31
Colombia 30 30 30 30 31
Greece 31 31 31 31 30
Syrian Arab Republic 31 31 31 31 31
Mexico 33 33 33 33 33
Panama 32 32 33 33 33
Armenia 34 34 33 33 33
Venezuela, RB 34 34 34 34 34
Brazil 34 34 34 34 35
Chile 34 35 35 35 35
Portugal 36 36 37 37 37
Canada 38 38 38 39 39
Argentina 40 40 40 40 39
United States 42 42 42 42 42
Japan 44 44 44 45 45
Korea, Rep. 46 47 48 48 49
Uruguay 50 50 50 50 50
Lebanon 60 59 57 55 53
Israel 53 54 55 56 57
Puerto Rico 48 51 54 56 59
Australia 61 61 61 61 60
Kuwait 65 65 64 64 64
Hong Kong SAR, China 92 92 94 95 97
Singapore 97 99 100 100 100
Bosnia and Herzegovina
Lithuania
Comoros
West Bank and Gaza
Luxembourg
Macao SAR, China
Swaziland
Macedonia, FYR
Bermuda
Kyrgyz Republic
Cyprus
Malawi
Solomon Islands
Kosovo
St. Martin (French part)
Maldives
Tajikistan
Kiribati
Bhutan
Malta
Liberia
Marshall Islands
Liechtenstein
Mauritania
Seychelles
Mauritius
Slovak Republic
Jamaica
Croatia
Micronesia, Fed. Sts.
St. Kitts and Nevis
Moldova
Central African Republic
Monaco
Cabo Verde
Lao PDR
Botswana
Montenegro
Trinidad and Tobago
Isle of Man
Turks and Caicos Islands
Iceland
Belize
Latvia
Antigua and Barbuda
Sao Tome and Principe
American Samoa
Namibia
San Marino
Nepal
Djibouti
Guyana
Serbia
New Caledonia
Sierra Leone
Guinea-Bissau
Sint Maarten (Dutch part)
Guam
Slovenia
Grenada
Curacao
Greenland
South Sudan
Northern Mariana Islands
Sri Lanka
Norway
St. Lucia
Oman
St. Vincent and the Grenadines
Gambia, The
Suriname
Palau
Cayman Islands
Gabon
Burundi
Papua New Guinea
Brunei Darussalam
French Polynesia
Timor-Leste
Fiji
Tonga
Faeroe Islands
Tunisia
Estonia
Turkmenistan
Eritrea
Tuvalu
Bahrain
Benin
Lesotho
Barbados
Vanuatu
Bahamas, The
Qatar
Equatorial Guinea
Aruba
Dominica
Virgin Islands (U.S.)
Rwanda
Andorra
Samoa
Albania

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