Country name 1990 1991 1992 1993
Afghanistan 50 50 49 49
Albania 36 35 34 33
Algeria 43 42 41 41
American Samoa
Andorra 28 27 27 26
Angola 60 60 60 60
Antigua and Barbuda 39 39 38 38
Argentina 37 36 35 35
Armenia 30 29 28 27
Aruba
Australia 29 29 28 27
Austria 30 29 29 28
Azerbaijan 38 38 37 37
Bahamas, The 39 39 38 38
Bahrain 45 44 44 43
Bangladesh 54 54 53 53
Barbados 40 39 39 38
Belarus 33 32 31 31
Belgium 28 27 27 26
Belize 38 38 37 37
Benin 67 68 68 68
Bermuda
Bhutan 53 53 53 53
Bolivia 37 37 36 36
Bosnia and Herzegovina 38 37 36 36
Botswana 41 40 39 38
Brazil 42 41 41 40
Brunei Darussalam 30 29 29 28
Bulgaria 34 33 33 32
Burkina Faso 61 61 61 61
Burundi 54 54 54 54
Cabo Verde 53 53 53 53
Cambodia 60 61 61 61
Cameroon 58 58 58 58
Canada 27 27 26 25
Cayman Islands
Central African Republic 57 57 57 57
Chad 58 58 58 58
Chile 35 34 33 32
China 34 33 32 31
Colombia 46 45 45 45
Comoros 46 46 46 45
Congo, Dem. Rep. 58 58 58 58
Congo, Rep. 64 64 64 64
Costa Rica 33 32 32 31
Cote d'Ivoire 59 59 59 59
Croatia 36 35 35 34
Cuba 38 38 37 37
Curacao
Cyprus 35 34 34 33
Czech Republic 31 31 30 30
Denmark 29 28 27 27
Djibouti 43 43 42 42
Dominica 43 42 42 42
Dominican Republic 44 44 44 43
Ecuador 40 40 39 39
Egypt, Arab Rep. 38 37 36 35
El Salvador 41 40 40 39
Equatorial Guinea 61 61 61 61
Eritrea 48 48 48 48
Estonia 33 33 32 32
Ethiopia 37 37 37 37
Faeroe Islands
Fiji 51 51 50 49
Finland 27 27 26 26
France 29 29 28 28
French Polynesia
Gabon 61 61 61 61
Gambia, The 65 65 65 66
Georgia 35 34 33 33
Germany 29 28 28 27
Ghana 61 61 61 61
Greece 31 31 30 30
Greenland
Grenada 43 42 42 42
Guam
Guatemala 41 41 40 40
Guinea 64 64 64 64
Guinea-Bissau 56 56 56 56
Guyana 45 44 44 44
Haiti 56 56 56 56
Honduras 37 36 35 35
Hong Kong SAR, China
Hungary 34 33 33 32
Iceland 28 27 26 26
India 52 52 53 53
Indonesia 47 47 46 46
Iran, Islamic Rep. 38 37 36 35
Iraq 40 40 39 39
Ireland 29 28 28 27
Isle of Man
Israel 28 28 27 27
Italy 30 29 29 28
Jamaica 41 41 40 40
Japan 30 30 30 30
Jordan 38 37 37 36
Kazakhstan 39 38 38 37
Kenya 54 54 54 54
Kiribati 46 45 44 43
Korea, Dem. Rep. 39 39 38 38
Korea, Rep. 33 32 31 30
Kosovo
Kuwait 34 33 32 32
Kyrgyz Republic 40 40 39 38
Lao PDR 52 52 51 51
Latvia 33 32 32 31
Lebanon 35 34 33 32
Lesotho 38 38 37 37
Liberia 60 60 61 61
Libya 39 38 37 37
Liechtenstein
Lithuania 32 32 31 31
Luxembourg 29 28 28 27
Macao SAR, China
Macedonia, FYR 32 32 31 30
Madagascar 47 47 47 47
Malawi 49 49 49 49
Malaysia 42 41 41 40
Maldives 65 65 65 64
Mali 65 65 65 65
Malta 28 28 27 27
Marshall Islands 44 43 42 41
Mauritania 54 54 54 53
Mauritius 42 41 41 41
Mexico 34 33 33 33
Micronesia, Fed. Sts. 42 40 39 38
Moldova 35 34 34 33
Monaco
Mongolia 35 34 33 32
Montenegro 35 34 34 33
Morocco 43 43 42 41
Mozambique 53 53 53 53
Myanmar 49 49 49 48
Namibia 41 40 40 39
Nepal 59 59 59 59
Netherlands 29 28 28 27
New Caledonia
New Zealand 27 26 26 25
Nicaragua 36 35 34 33
Niger 63 63 63 63
Nigeria 61 61 62 62
Northern Mariana Islands
Norway 28 27 27 26
Oman 46 45 45 44
Pakistan 49 49 49 48
Palau
Panama 38 38 38 37
Papua New Guinea 52 52 51 51
Paraguay 41 40 40 39
Peru 40 39 39 39
Philippines 46 46 46 46
Poland 33 33 32 31
Portugal 32 31 30 30
Puerto Rico
Qatar 38 37 36 36
Romania 35 34 33 33
Russian Federation 31 31 30 29
Rwanda 30 29 29 28
Samoa 42 41 40 40
San Marino
Sao Tome and Principe 59 58 58 58
Saudi Arabia 52 51 51 50
Senegal 62 63 63 63
Serbia 36 36 35 35
Seychelles 38 37 37 36
Sierra Leone 59 59 59 59
Singapore 32 31 31 30
Sint Maarten (Dutch part)
Slovak Republic 34 33 33 32
Slovenia 34 34 33 32
Solomon Islands 49 49 48 47
Somalia 49 49 49 49
South Africa 35 35 34 34
South Sudan
Spain 30 29 29 28
Sri Lanka 41 40 39 38
St. Kitts and Nevis
St. Lucia 43 43 42 42
St. Martin (French part)
St. Vincent and the Grenadines 42 42 41 41
Sudan 46 46 46 46
Suriname 41 41 41 40
Swaziland 37 37 36 36
Sweden 28 27 27 26
Switzerland 29 29 28 28
Syrian Arab Republic 41 41 40 39
Tajikistan 39 39 39 38
Tanzania 55 55 55 56
Thailand 32 32 31 31
Timor-Leste 44 43 43 42
Togo 63 63 63 63
Tonga 41 40 39 38
Trinidad and Tobago 41 41 40 40
Tunisia 39 39 38 37
Turkey 38 37 37 36
Turkmenistan 40 39 38 38
Turks and Caicos Islands
Tuvalu
Uganda 49 49 48 48
Ukraine 33 32 31 31
United Arab Emirates 37 36 35 35
United Kingdom 25 25 24 24
United States 19 19 18 17
Uruguay 38 37 36 36
Uzbekistan 52 51 51 50
Vanuatu 61 60 60 59
Venezuela, RB 38 37 37 36
Vietnam 49 48 47 46
Virgin Islands (U.S.)
West Bank and Gaza
Yemen, Rep. 47 47 46 45
Zambia 48 48 48 47
Zimbabwe 34 34 33 33

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