Country name 1980 1981 1982 1983
Chad 3 3
Ghana 6 5 3 4
Central African Republic 7 9 7 12
Congo, Dem. Rep. 10 11 8 9
Madagascar 15 11 8 8
Uganda 6 6 9 7
Chile 21 23 11 10
Mozambique 8 10 11 12
El Salvador 13 14 13 12
Sierra Leone 16 19 13 14
Honduras 25 21 14 14
Guatemala 16 17 14 11
Puerto Rico 12 14 14 11
Burundi 14 17 14 23
Ethiopia 15 15 13
Bolivia 17 16 16 13
Mali 15 16 16 12
Zambia 23 19 17 14
Turkey 18 18 17 16
United Kingdom 18 16 17 18
Nepal 18 18 17 20
Rwanda 16 13 18 14
Denmark 20 17 18 18
Bangladesh 14 18 18 17
Burkina Faso 15 14 18 17
Mauritius 21 25 18 17
New Caledonia 17 18 17
Nicaragua 17 24 19 22
Sudan 15 19 19 15
Sweden 22 19 19 19
Netherlands 23 20 19 20
Zimbabwe 17 21 19 14
Pakistan 18 19 19 19
Canada 23 25 19 20
Uruguay 17 21 20 14
Iran, Islamic Rep. 31 27 20 27
Senegal 17 25 20 20
Dominican Republic 25 24 20 21
Luxembourg 21 20 20 20
Belgium 25 21 21 18
Colombia 19 21 21 20
Niger 28 20 21 13
Solomon Islands 25 23 21 25
Belize 24 26 21 20
Namibia 31 28 21 19
Jamaica 16 20 21 22
Brazil 23 23 21 17
France 23 21 21 19
Togo 28 24 21 21
Malawi 25 18 21 23
Bahamas, The 18 19 21 20
Germany 25 23 22 22
Argentina 25 23 22 21
Ecuador 25 26 22 21
Kenya 25 23 22 21
Spain 24 22 22 21
India 18 22 22 20
United States 23 24 22 22
Myanmar 21 23 22 18
Gambia, The 27 25 22 19
Barbados 25 28 23 20
Mexico 27 27 23 21
Cote d'Ivoire 27 26 23 18
Austria 27 26 23 22
Israel 22 21 23 23
Italy 27 25 24 22
Costa Rica 27 29 25 16
Cameroon 21 27 25 26
Macao SAR, China 25 27
Guyana 33 31 25 21
South Africa 30 33 25 25
Kuwait 14 17 25 25
Syrian Arab Republic 30 25 25 25
New Zealand 20 24 25 26
Fiji 32 34 26 21
Cuba 26 26 26 25
Saudi Arabia 23 21 26 34
Ireland 26 27 26 22
Switzerland 30 28 26 25
Georgia 29 25 26 31
Greece 27 22 26 25
Thailand 29 30 27 30
Oman 22 23 27 26
Panama 28 28 27 18
Norway 27 26 27 25
Finland 30 27 27 27
Benin 15 16 28 17
Venezuela, RB 26 24 28 12
Suriname 26 31 28 16
Indonesia 24 27 28 31
Philippines 29 27 28 30
St. Vincent and the Grenadines 38 31 28 25
Iceland 27 27 28 21
Morocco 24 26 28 24
Trinidad and Tobago 31 28 28 26
Guinea-Bissau 28 26 28 23
Hungary 31 30 29 26
Korea, Rep. 32 30 29 29
Malta 23 25 29 27
Somalia 42 28 29 22
Australia 27 28 30 25
Japan 32 31 30 28
Nigeria 34 30 22
Egypt, Arab Rep. 28 30 30 29
Swaziland 41 31 30 33
Latvia 26 30 31 31
Sri Lanka 34 28 31 29
Dominica 51 34 31 28
Hong Kong SAR, China 35 35 31 27
Tonga 30 30 31 29
Comoros 33 27 31 30
Cyprus 38 34 32 30
Tunisia 29 32 32 33
Papua New Guinea 25 27 32 29
St. Lucia 34 34 33 22
China 35 33 34 34
Peru 29 34 34 24
Malaysia 27 32 34 34
Romania 36 34
St. Kitts and Nevis 38 30 34 37
Bulgaria 34 35 34 33
Mauritania 26 30 34 26
Gabon 28 36 35 35
Portugal 34 36 35 29
Bhutan 30 32 35 39
Bahrain 46 42 36 44
Algeria 39 37 37 38
Botswana 40 43 38 29
Albania 35 35 38 36
Antigua and Barbuda 35 42 39 20
Jordan 37 46 39 33
Grenada 27 41 42 37
Lesotho 37 38 43 33
Singapore 45 45 46 46
Congo, Rep. 36 48 60 38
Kiribati 33 50 63 59
Mongolia 70 70 58
Tajikistan
Guinea
Andorra
French Polynesia
Faeroe Islands
Armenia
Estonia
Cambodia
Northern Mariana Islands
Bosnia and Herzegovina
Eritrea
Greenland
Equatorial Guinea
Kazakhstan
Korea, Dem. Rep.
Guam
St. Martin (French part)
Cabo Verde
Palau
Djibouti
Brunei Darussalam
Kosovo
Bermuda
Paraguay
Isle of Man
Macedonia, FYR
Aruba
Czech Republic
Turks and Caicos Islands
Poland
United Arab Emirates
Haiti
Uzbekistan
Kyrgyz Republic
Cayman Islands
Qatar
South Sudan
Maldives
Liechtenstein
Vietnam
Libya
West Bank and Gaza
Monaco
Iraq
Moldova
San Marino
Micronesia, Fed. Sts. 38
Sao Tome and Principe
Belarus
Croatia
Tanzania
Azerbaijan
Timor-Leste
Serbia
Liberia
Seychelles
Marshall Islands
Lao PDR
Turkmenistan
Montenegro
Tuvalu
Sint Maarten (Dutch part)
Ukraine
Slovak Republic
Angola
Slovenia
American Samoa
Lithuania
Vanuatu 24
Russian Federation
Curacao
Virgin Islands (U.S.)
Afghanistan
Yemen, Rep.
Samoa
Lebanon

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