Country name 1986 1987 1988 1989 1990
Sierra Leone 40 40 39 38 38
Niger 42 43 43 44 44
Angola 43 43 43 43 43
South Sudan 42 43 44 44 45
Mozambique 43 44 44 44 45
Mali 44 45 45 46 46
Malawi 46 46 46 45 45
Ethiopia 47 47 48 48 49
Timor-Leste 46 47 48 49 50
Nigeria 47 47 47 47 47
Chad 47 48 48 48 48
Somalia 48 48 47 47 47
Afghanistan 47 48 49 50 51
Eritrea 48 48 49 50 50
Guinea 48 49 49 50 51
Equatorial Guinea 48 49 49 49 50
Uganda 49 49 48 48 47
Rwanda 52 49 45 41 36
Zambia 50 49 48 47 46
Liberia 49 49 49 49 49
Congo, Dem. Rep. 49 50 50 50 50
Bhutan 49 50 51 52 52
Guinea-Bissau 50 50 51 51 51
Burkina Faso 51 51 51 51 51
Burundi 51 51 50 50 50
Madagascar 51 51 51 52 52
Central African Republic 52 52 52 52 51
Nepal 51 52 53 54 55
Tanzania 53 52 52 52 51
Gambia, The 52 52 53 53 54
Lao PDR 53 53 54 54 55
Benin 54 54 55 55 56
Cambodia 54 55 55 56 56
Cameroon 55 55 55 55 55
Haiti 54 55 55 56 56
Cote d'Ivoire 55 55 55 55 55
Bolivia 55 55 56 56 57
Ghana 56 56 57 57 58
Sudan 56 57 57 57 57
Comoros 56 57 57 58 58
India 56 57 57 58 58
Solomon Islands 57 57 57 57 57
Bangladesh 56 57 58 58 59
Togo 57 57 57 57 57
Senegal 56 57 58 58 59
Djibouti 57 58 58 58 58
Congo, Rep. 58 58 57 57 57
Papua New Guinea 58 58 58 58 59
Yemen, Rep. 57 58 58 59 59
Maldives 57 58 59 60 61
Lesotho 58 59 59 60 61
Mauritania 59 59 59 59 60
Pakistan 60 60 60 61 61
Myanmar 60 60 60 61 61
Swaziland 60 60 61 61 61
Kiribati 61 62 62 63 63
Kenya 62 62 61 61 61
Mongolia 61 62 62 63 63
Gabon 61 62 62 63 63
Namibia 63 63 63 64 64
Sao Tome and Principe 63 63 63 63 64
Guatemala 63 63 64 65 65
Vanuatu 63 63 64 64 65
Indonesia 63 64 64 64 65
Zimbabwe 64 64 63 62 61
Morocco 64 64 65 66 66
Iran, Islamic Rep. 64 64 65 66 66
South Africa 64 65 65 66 66
Botswana 65 65 65 65 65
Nicaragua 65 65 66 67 67
Egypt, Arab Rep. 65 65 66 67 67
Cabo Verde 66 66 66 67 67
Tajikistan 66 66 66 66 66
Turkmenistan 66 66 66 66 66
Peru 66 66 67 67 68
Micronesia, Fed. Sts. 66 66 67 67 67
Turkey 66 66 67 67 68
El Salvador 66 67 67 68 69
Fiji 67 67 67 67 68
Samoa 66 67 67 68 68
Guyana 67 67 67 67 67
Algeria 66 67 68 68 68
Philippines 67 67 68 68 68
Oman 67 67 68 69 69
Honduras 67 67 68 69 69
Brazil 67 68 68 69 69
St. Kitts and Nevis 68
Iraq 68 68 69 69 70
Greenland 68 68 69 69 69
Dominican Republic 68 69 69 70 71
Tunisia 68 69 70 70 72
Libya 69 69 70 70 70
Saudi Arabia 69 69 70 70 71
Azerbaijan 69 69 69 69 69
Kyrgyz Republic 69 70 70 72 73
Ecuador 69 70 70 71 72
Paraguay 70 70 70 70 70
Syrian Arab Republic 70 70 70 71 71
China 70 70 70 71 71
Grenada 70 70 70 71 71
Uzbekistan 70 70 70 70 70
Moldova 70 70 71 71 71
Jordan 70 70 71 71 71
French Polynesia 70 71 71 71 71
Trinidad and Tobago 71 71 71 71 71
Suriname 71 71 71 71 71
Tonga 70 71 71 71 71
Lebanon 71 71 71 72 72
Armenia 72 71 71 71 71
Korea, Dem. People’s Rep. 71 71 72 72 73
Colombia 71 72 72 72 72
St. Vincent and the Grenadines 72 72 72 72 72
Malaysia 72 72 72 72 73
United Arab Emirates 72 72 72 73 73
Thailand 72 72 73 73 73
Macedonia, FYR 72 72 73 73 73
Romania 73 72 72 73 73
Venezuela, RB 72 72 72 73 73
New Caledonia 73 73 74 72 73
Mauritius 72 73 73 73 73
Sri Lanka 73 73 73 73 73
Kuwait 73 73 73 73 73
Barbados 73 73 73 73 74
Seychelles 73
Mexico 73 73 73 74 74
Antigua and Barbuda 73 73 73 74 74
Bahrain 73 73 73 73 74
Dominica 74
Bahamas, The 73 74 74 74 74
Belize 73 74 74 74 74
St. Lucia 74 74 74 74 73
Guam 73 74 74 74 74
Hungary 73 74 74 74 74
Brunei Darussalam 74 74 74 74 75
Georgia 74 74 74 74 74
Kazakhstan 74 74 73 73 73
Korea, Rep. 73 74 75 75 76
Vietnam 74 74 74 75 75
Jamaica 74 74 74 74 74
Russian Federation 74 74 75 74 74
Bosnia and Herzegovina 74 74 74 74 74
Argentina 74 75 75 75 75
Marshall Islands 75
Chile 74 75 75 76 76
Albania 74 75 75 75 75
Bulgaria 75 75 75 75 75
Ukraine 74 75 75 75 75
Estonia 75 75 75 75 75
Slovak Republic 75 75 76 75 75
Latvia 75 75 75 75 75
Czech Republic 75 75 75 75 75
Poland 75 75 76 76 76
Croatia 75 75 75 76 76
Panama 75 75 76 76 76
Qatar 75 76 76 76 76
Belarus 76 76 76 76 76
Uruguay 75 76 76 76 76
Aruba 76 76 76 76 76
Slovenia 76 76 77 77 77
Lithuania 76 76 76 76 76
Cuba 76 76 77 77 77
Singapore 77 77 77 77 78
Macao SAR, China 77 77 77 77 78
Malta 77 77 77 77 78
Ireland 77 77 77 77 78
St. Martin (French part) 77 77 78 78 78
Israel 77 77 75 78 78
Montenegro 77 77 77 78 78
Portugal 77 77 77 78 78
New Zealand 77 77 78 78 78
Virgin Islands (U.S.) 77 78 78 78 79
Denmark 78 78 78 78 78
Costa Rica 78 78 78 78 78
Germany 78 78 78 78 79
Luxembourg 78 78 78 78 79
Cyprus 78 78 78 78 79
Austria 78 78 79 79 79
United Kingdom 78 78 78 78 79
United States 78 78 78 79 79
Puerto Rico 78 79 79 79 79
Finland 79 79 79 79 79
Greece 79 79 79 79 80
Belgium 78 79 79 79 80
Faroe Islands 79 79 79 80 80
Australia 79 79 80 80 80
Norway 80 80 80 80 80
Italy 79 80 80 80 80
Hong Kong SAR, China 79 80 80 80 80
Iceland 81 80 80 80 81
France 80 80 80 81 81
Netherlands 80 80 80 80 80
Canada 80 80 80 80 81
Sweden 80 80 80 81 80
Spain 80 80 80 80 81
Switzerland 80 81 81 81 81
Japan 81 81 81 82 82
Curacao
West Bank and Gaza 70
American Samoa
Isle of Man
San Marino
Palau 75
Serbia
Bermuda
Cayman Islands
Monaco
Turks and Caicos Islands
Tuvalu
Northern Mariana Islands
Andorra
Sint Maarten (Dutch part)
Liechtenstein

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