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

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