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

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