Country name 1984 1985 1986 1987 1988
Sierra Leone 41 40 40 39 39
South Sudan 40 40 41 42 42
Angola 41 41 41 41 41
Niger 41 42 42 43 43
Mozambique 43 43 43 43 43
Mali 43 43 44 45 45
Timor-Leste 42 43 45 46 47
Afghanistan 44 44 45 46 47
Ethiopia 44 45 45 46 46
Equatorial Guinea 44 45 45 46 46
Eritrea 45 45 46 46 47
Guinea 44 45 46 47 48
Chad 46 46 46 46 46
Malawi 46 46 46 47 47
Somalia 46 46 46 46 46
Nigeria 46 46 46 46 46
Congo, Dem. Rep. 47 47 47 47 47
Guinea-Bissau 47 47 48 48 48
Liberia 47 47 47 47 47
Zambia 49 48 47 46 46
Central African Republic 49 48 48 48 47
Burundi 48 49 49 48 48
Bhutan 48 49 49 50 51
Uganda 49 49 49 49 48
Burkina Faso 49 49 49 49 49
Rwanda 50 49 48 45 41
Madagascar 50 50 50 50 50
Benin 49 50 51 51 52
Gambia, The 49 50 51 51 52
Lao PDR 50 51 51 52 53
Nepal 50 51 52 53 53
Tanzania 51 51 51 51 51
Haiti 52 53 53 53 54
Cote d'Ivoire 52 53 53 53 53
Cameroon 53 53 53 53 53
Cambodia 51 53 54 54 54
Senegal 53 54 55 56 56
Comoros 54 54 54 55 55
Ghana 54 54 55 55 56
Togo 54 55 55 55 56
Sudan 55 55 55 55 55
Papua New Guinea 55 55 55 55 55
Yemen, Rep. 54 55 56 56 57
Djibouti 55 55 56 56 56
Bolivia 55 56 56 57 58
Iran, Islamic Rep. 55 56 57 59 60
Lesotho 56 56 57 57 58
Maldives 56 57 57 58 59
Congo, Rep. 57 57 57 56 56
Myanmar 56 57 57 58 58
Mauritania 56 57 57 58 58
India 57 57 57 58 58
Solomon Islands 58 57 57 56 56
Bangladesh 57 57 58 58 59
Swaziland 57 57 58 58 59
Mongolia 58 58 59 59 60
Kiribati 58 58 59 59 60
Gabon 58 59 60 60 61
Kenya 59 60 60 60 60
Guatemala 59 60 60 61 61
Pakistan 59 60 60 60 61
El Salvador 59 60 61 62 64
Namibia 59 60 60 61 61
South Africa 59 60 60 61 61
Nicaragua 60 61 61 62 63
Sao Tome and Principe 61 61 61 61 61
Vanuatu 61 61 62 62 62
Indonesia 61 61 62 62 63
Guyana 61 61 61 62 62
Zimbabwe 61 61 61 61 61
Morocco 61 61 62 63 63
Turkey 61 62 62 63 63
Egypt, Arab Rep. 61 62 62 63 64
Iraq 61 62 63 65 66
Turkmenistan 62 62 62 63 63
Samoa 62 62 63 63 64
Peru 62 63 63 64 65
Botswana 63 63 63 63 63
Tajikistan 63 63 63 63 63
Cabo Verde 63 64 64 65 65
Honduras 63 64 64 65 66
Philippines 63 64 64 64 65
Greenland 63 64 64 65 65
Oman 63 64 65 65 66
Algeria 63 64 65 66 66
Fiji 64 64 65 65 65
Brazil 64 65 65 65 66
Kyrgyz Republic 65 65 65 66 66
Dominican Republic 65 65 66 66 67
Azerbaijan 65 65 66 66 65
Micronesia, Fed. Sts. 66 66 66 66 66
Tunisia 65 66 66 67 68
Ecuador 65 66 67 67 68
Moldova 66 66 67 67 67
Saudi Arabia 66 67 67 68 68
Libya 66 67 67 67 68
Uzbekistan 67 67 67 67 67
Kosovo 67 67 67 67 67
Suriname 67 67 67 67 67
Paraguay 67 67 67 68 68
Korea, Dem. Rep. 67 67 68 68 69
French Polynesia 67 67 68 68 68
Grenada 67 67 68 68 68
Trinidad and Tobago 67 68 68 68 68
Colombia 67 68 68 68 68
Thailand 67 68 69 69 70
Russian Federation 67 68 69 69 69
Syrian Arab Republic 68 68 69 69 70
Jordan 68 68 69 69 69
China 68 68 69 69 69
Mauritius 68 68 68 69 69
Korea, Rep. 68 69 69 70 70
Kazakhstan 69 69 69 69 69
Tonga 69 69 69 69 69
New Caledonia 69 69 69 70 70
Mexico 68 69 69 70 70
Vietnam 69 69 69 70 70
Lebanon 69 69 69 69 70
Hungary 69 69 69 70 70
St. Vincent and the Grenadines 69 69 69 69 70
Sri Lanka 69 69 69 69 69
Latvia 69 69 71 71 71
Estonia 69 69 70 71 71
Armenia 70 70 69 69 68
Malaysia 69 70 70 70 70
Ukraine 69 70 70 70 70
Bahamas, The 69 70 70 70 70
Barbados 69 70 70 70 70
Venezuela, RB 69 70 70 70 71
Romania 70 70 69 69 69
Macedonia, FYR 69 70 70 70 71
Georgia 70 70 70 70 70
Antigua and Barbuda 70 70 70 70 71
United Arab Emirates 70 70 70 71 71
St. Lucia 70 70 71 71 71
Lithuania 70 71 72 72 72
Poland 71 71 71 71 71
Argentina 70 71 71 71 71
Slovak Republic 71 71 71 71 71
Guam 71 71 71 71 72
Croatia 70 71 71 71 71
Belarus 70 71 72 71 71
Czech Republic 71 71 71 71 72
Jamaica 71 71 71 71 71
Belize 71 71 71 71 71
Kuwait 71 71 71 72 72
Bulgaria 71 71 72 72 72
Slovenia 71 71 72 72 72
Bahrain 71 71 72 72 72
Albania 71 71 72 72 72
Uruguay 71 72 72 72 72
Bosnia and Herzegovina 72 72 72 71 70
Panama 72 72 72 72 73
Chile 71 72 72 73 73
Brunei Darussalam 72 72 73 73 73
St. Martin (French part) 73 73 74 74 74
Portugal 73 73 73 74 74
Virgin Islands (U.S.) 73 73 73 74 74
Aruba 73 73 73 73 73
Luxembourg 73 74 74 74 74
Ireland 73 74 74 74 74
Montenegro 74 74 74 74 74
Austria 74 74 74 75 75
New Zealand 74 74 74 74 74
Singapore 74 74 74 75 75
Macao SAR, China 74 74 74 74 75
Germany 74 74 74 75 75
Malta 74 74 74 75 75
Finland 75 74 75 75 75
Qatar 74 74 74 75 75
Puerto Rico 74 74 74 74 74
Denmark 75 74 75 75 75
Belgium 74 75 75 75 76
Cuba 74 75 75 75 75
United States 75 75 75 75 75
Costa Rica 74 75 75 75 75
United Kingdom 75 75 75 75 75
Greece 75 75 75 76 76
Israel 75 75 75 75 74
France 75 75 76 76 76
Italy 75 75 76 76 76
Australia 75 76 76 76 76
Cyprus 76 76 76 76 76
Faeroe Islands 76 76 76 76 76
Norway 76 76 76 76 76
Spain 76 76 77 77 77
Netherlands 76 76 76 77 77
Canada 76 76 76 77 77
Hong Kong SAR, China 76 76 77 77 77
Sweden 77 77 77 77 77
Switzerland 77 77 77 77 77
Iceland 78 78 78 77 77
Japan 77 78 78 78 78
Northern Mariana Islands
Tuvalu
Andorra
Bermuda
Sint Maarten (Dutch part)
Cayman Islands
Turks and Caicos Islands
St. Kitts and Nevis 66
San Marino
Dominica 72
Isle of Man
Liechtenstein
Monaco
Palau
Marshall Islands 72
Serbia
West Bank and Gaza
Seychelles 70
American Samoa
Curacao

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