Country name 1980 1981 1982 1983 1984
Kiribati 18 13 13 15 19
Burundi 15 15 14 11 10
Cameroon 36 36 38 43 43
Cabo Verde 50 35 45 53 46
Costa Rica 55 53
Tunisia 50 34 56 43 57
Gambia, The 57 60 57 56 53
Haiti 57 60 61
Singapore 63 80 76
Netherlands 66 64 66 68 70
New Caledonia 66 82 75
Algeria 62 68 75
Central African Republic 56 70 70
Guinea-Bissau 52 71 100
Togo 77 61 72 66 63
Syrian Arab Republic 81 79 77 81 83
Swaziland 81 74 78 75 78
Malawi 81 79 79 84 87
Qatar 95 98 85 85
Bahrain 88 91 91
United Arab Emirates 83 89 91 92
Hong Kong SAR, China 91 91 90 89 84
Afghanistan 85 76 91 89
Jordan 90 91 91 93
Seychelles 98 98 95 91
El Salvador 88 96 97 98
Cyprus 93 72 97 87 100
Spain 99 97 98 96
Hungary 99 99 100 97 90
Japan 84 98 100 97 96
Korea, Rep. 100 100 96 93
Italy 99 100 100 100 100
Greece 96 100 100 100
Kuwait 91 99 100 98 98
Senegal
Cayman Islands
Morocco 57 62 63
Cambodia
American Samoa
Chad
Panama
Chile 89
St. Martin (French part)
China
Mauritania 51
Colombia 54
Nicaragua
Comoros
Australia
Congo, Dem. Rep.
Solomon Islands 39
Congo, Rep. 100 100 88
Taiwan, China
Burkina Faso 28
United Kingdom
Cote d'Ivoire 51 50 45 45
Moldova
Croatia
Nepal
Cuba
Norway
Curacao
Philippines
Bulgaria
Samoa
Czech Republic
Armenia
Denmark
Argentina
Djibouti
Antigua and Barbuda
Dominica
Timor-Leste
Dominican Republic
Tuvalu
Ecuador
Malta 93 99
Egypt, Arab Rep. 100
Mexico
Brunei Darussalam 86 100
Mongolia
Equatorial Guinea
Myanmar
Eritrea
Austria
Estonia
Nigeria
Ethiopia
Pakistan
Faeroe Islands
Paraguay
Fiji 92 94 92 95
Portugal
Finland
Russian Federation
France
Sao Tome and Principe
French Polynesia
Aruba
Gabon
Slovak Republic
Brazil
South Africa
Georgia
St. Kitts and Nevis
Germany
Sudan
Ghana
Switzerland
Botswana
Tanzania
Greenland
Tonga
Grenada
Turkmenistan
Guam
Ukraine
Guatemala
Canada
Guinea
Marshall Islands
Bosnia and Herzegovina
Mauritius
Guyana
Micronesia, Fed. Sts.
Bolivia
Monaco
Honduras
Montenegro
Bhutan
Mozambique 44
Bermuda
Namibia
Iceland
Azerbaijan
India
New Zealand
Indonesia
Niger 47
Iran, Islamic Rep.
Northern Mariana Islands
Iraq 75 69
Oman 80 78
Ireland
Palau
Isle of Man
Papua New Guinea
Israel
Peru 84 88
Benin 60 91 42 48
Poland
Jamaica
Puerto Rico
Belize
Romania
Belgium
Rwanda
Kazakhstan
San Marino
Kenya 87 89
Saudi Arabia
Belarus
Serbia
Korea, Dem. Rep.
Sierra Leone
Barbados
Sint Maarten (Dutch part)
Uruguay
Slovenia
Vanuatu
Somalia
Vietnam
South Sudan
West Bank and Gaza
Sri Lanka
Zambia
St. Lucia 28
Bangladesh
St. Vincent and the Grenadines
Liberia
Suriname
Libya 95 91 85
Sweden
Liechtenstein
Angola
Lithuania
Tajikistan
Luxembourg
Thailand
Macao SAR, China
Andorra
Macedonia, FYR
Trinidad and Tobago
Madagascar
Turkey 54
Bahamas, The
Turks and Caicos Islands
Malaysia
Uganda
Maldives
Albania
Mali 74 85
United States
Kyrgyz Republic
Uzbekistan
Lao PDR
Venezuela, RB
Latvia
Virgin Islands (U.S.)
Lebanon
Yemen, Rep.
Lesotho
Zimbabwe 80

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