| Country name | 2008 | 2009 | 2010 | 2011 | 2012 | ||
|---|---|---|---|---|---|---|---|
| Afghanistan | 38 | 39 | 39 | 40 |
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| Albania | 48 | 48 | 48 | 47 |
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| Algeria | 47 | 47 | 47 | 47 |
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| American Samoa | |||||||
| Andorra | 47 | 48 | 48 | 48 |
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| Angola | 46 | 46 | 45 |
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| Antigua and Barbuda | 48 | 48 | 47 | 48 |
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| Argentina | 49 | 49 | 49 |
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| Armenia | 47 | 47 | 47 | 47 |
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| Aruba | 49 | 49 | 49 | 48 |
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| Australia | 49 | 49 | 49 |
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| Austria | 48 | 48 | 48 |
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| Azerbaijan | 47 | 47 | 46 | 46 |
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| Bahamas, The | 49 | 50 | 50 |
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| Bahrain | 49 | 49 | 49 | 49 |
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| Bangladesh | 51 | 50 | 51 |
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| Barbados | 49 | 49 | 49 | 49 |
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| Belarus | 49 | 48 | 49 | 49 |
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| Belgium | 49 | 49 | 49 |
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| Belize | 49 | 49 | 49 | 49 |
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| Benin | 46 | 46 | 46 | 47 |
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| Bermuda | 49 | 49 |
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| Bhutan | 50 | 50 | 50 | 50 | 50 |
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| Bolivia | 49 | 49 | 49 |
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| Bosnia and Herzegovina | 49 | 49 | 49 | 49 |
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| Botswana | 49 | 49 |
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| Brazil | 47 | 47 | 47 |
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| Brunei Darussalam | 48 | 48 | 48 | 48 |
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| Bulgaria | 49 | 49 | 48 |
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| Burkina Faso | 46 | 46 | 47 | 47 |
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| Burundi | 49 | 49 | 50 | 50 |
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| Cambodia | 47 | 47 | 48 | 48 |
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| Cameroon | 46 | 46 | 46 | 46 |
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| Canada | 49 | 49 |
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| Cape Verde | 48 | 48 | 48 | 48 |
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| Cayman Islands | 48 | 50 |
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| Central African Republic | 42 | 42 | 42 | 42 |
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| Chad | 41 | 41 | 42 | 43 |
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| Chile | 48 | 48 | 48 |
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| China | 46 | 46 | 46 | 46 |
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| Colombia | 49 | 49 | 49 | 48 |
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| Comoros | 47 | 45 |
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| Congo, Dem. Rep. | 45 | 46 | 46 | 46 |
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| Congo, Rep. | 48 | 48 | 48 | 48 |
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| Costa Rica | 48 | 48 | 48 | 48 |
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| Cote d'Ivoire | 44 | 45 | 45 |
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| Croatia | 49 | 49 | 49 |
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| Cuba | 48 | 48 | 48 | 48 |
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| Curacao | |||||||
| Cyprus | 49 | 49 | 49 |
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| Czech Republic | 48 | 49 | 49 |
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| Denmark | 49 | 49 | 49 |
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| Djibouti | 47 | 47 | 47 | 47 |
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| Dominica | 49 | 49 | 49 | 49 |
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| Dominican Republic | 47 | 45 | 46 | 47 |
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| Ecuador | 49 | 49 | 49 |
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| Egypt, Arab Rep. | 48 | 48 |
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| El Salvador | 48 | 48 | 48 | 48 |
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| Equatorial Guinea | 49 | 49 | 49 | 49 |
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| Eritrea | 45 | 45 | 45 | 45 |
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| Estonia | 48 | 48 | 48 |
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| Ethiopia | 47 | 48 | 47 | 47 |
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| Faeroe Islands | |||||||
| Fiji | 48 | 48 | 48 |
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| Finland | 49 | 49 | 49 |
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| France | 48 | 49 | 49 |
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| French Polynesia | |||||||
| Gabon | 49 | ||||||
| Gambia, The | 51 | 51 | 50 | 51 |
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| Georgia | 47 | 47 | 47 | 47 |
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| Germany | 49 | 49 | 49 |
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| Ghana | 49 | 49 | 49 | 47 |
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| Greece | 49 | ||||||
| Greenland | |||||||
| Grenada | 48 | 47 | 48 |
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| Guam | |||||||
| Guatemala | 48 | 48 | 48 |
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| Guinea | 45 | 45 | 45 | 46 |
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| Guinea-Bissau | 48 | ||||||
| Guyana | 49 | 49 | 49 | 49 |
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| Haiti | |||||||
| Honduras | 49 | 49 | 49 | 49 |
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| Hong Kong SAR, China | 48 | 48 | 48 | 48 |
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| Hungary | 48 | 48 | 48 |
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| Iceland | 49 | 49 | 49 |
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| India | 48 | ||||||
| Indonesia | 48 | 48 | 50 |
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| Iran, Islamic Rep. | 48 | 48 | 48 | 48 |
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| Iraq | |||||||
| Ireland | 49 | 49 | 49 |
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| Isle of Man | |||||||
| Israel | 49 | 49 | 49 |
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| Italy | 48 | 48 | 48 |
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| Jamaica | 49 | 49 | 49 |
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| Japan | 49 | 49 | 49 |
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| Jordan | 49 | 49 |
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| Kazakhstan | 49 | 49 | 49 | 49 | 49 |
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| Kenya | 49 | 49 |
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| Kiribati | 50 | 50 |
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| Korea, Dem. Rep. | |||||||
| Korea, Rep. | 48 | 48 | 48 |
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| Kosovo | |||||||
| Kuwait | 49 | 49 | 49 | 49 |
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| Kyrgyz Republic | 49 | 49 | 49 | 49 |
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| Lao PDR | 47 | 47 | 47 | 47 |
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| Latvia | 48 | 48 | 48 | 49 |
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| Lebanon | 48 | 49 | 48 | 48 |
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| Lesotho | 49 | 50 | 49 | 49 |
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| Liberia | 47 | 46 | 47 |
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| Libya | |||||||
| Liechtenstein | 50 | 51 | 49 | 49 |
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| Lithuania | 48 | 48 | 48 | 48 |
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| Luxembourg | 49 | 49 |
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| Macao SAR, China | 47 | 47 | 48 | 48 |
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| Macedonia, FYR | 48 | 48 | 48 |
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| Madagascar | 49 | 49 | 49 | 49 |
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| Malawi | 50 | 50 | 50 | 51 |
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| Malaysia | 49 | 48 | 48 |
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| Maldives | 48 | 48 | 48 | 48 |
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| Mali | 45 | 45 | 45 | 46 |
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| Malta | 49 | 49 | 49 |
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| Marshall Islands | 48 | 48 | 48 |
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| Mauritania | 50 | 50 | 50 | 51 |
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| Mauritius | 49 | 49 | 49 | 49 |
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| Mexico | 49 | 49 | 49 | 49 |
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| Micronesia, Fed. Sts. | |||||||
| Moldova | 48 | 48 | 48 | 48 |
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| Monaco | 47 | 49 | 51 | 50 |
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| Mongolia | 49 | 49 | 49 | 49 |
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| Montenegro | 48 | 48 | 48 | 48 | 48 |
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| Morocco | 47 | 47 | 47 | 47 | 48 |
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| Mozambique | 47 | 47 | 47 | 47 |
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| Myanmar | 50 | 49 | 50 |
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| Namibia | 49 | 49 | 49 |
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| Nepal | 49 | 49 | 50 | 50 | 50 |
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| Netherlands | 48 | 48 | 49 |
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| New Caledonia | |||||||
| New Zealand | 49 | 49 | 49 |
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| Nicaragua | 48 | 48 |
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| Niger | 43 | 43 | 44 | 44 |
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| Nigeria | 46 | 46 | 47 |
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| Northern Mariana Islands | |||||||
| Norway | 49 | 49 | 49 |
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| Oman | 49 | 48 | 49 |
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| Pakistan | 44 | 44 | 44 | 44 |
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| Palau | |||||||
| Panama | 48 | 48 | 48 | 48 |
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| Papua New Guinea | 45 | ||||||
| Paraguay | 48 | 48 | 48 |
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| Peru | 49 | 49 | 49 | 49 |
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| Philippines | 48 | 48 |
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| Poland | 48 | 48 | 49 |
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| Portugal | 47 | 48 | 48 |
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| Puerto Rico | 49 | 49 | 49 |
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| Qatar | 49 | 49 | 49 | 49 |
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| Romania | 48 | 48 | 48 |
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| Russian Federation | 49 | 49 |
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| Rwanda | 51 | 51 | 51 | 51 |
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| Samoa | 48 | 48 | 49 |
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| San Marino | 48 | 48 | 50 | 47 |
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| Sao Tome and Principe | 49 | 50 | 49 | 49 | 49 |
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| Saudi Arabia | 49 | 49 | 49 | 49 |
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| Senegal | 50 | 51 | 51 | 51 |
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| Serbia | 49 | 49 | 49 | 49 |
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| Seychelles | 49 | 49 | 50 | 50 |
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| Sierra Leone | 49 | ||||||
| Singapore | 48 | 48 |
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| Sint Maarten (Dutch part) | |||||||
| Slovak Republic | 49 | 49 | 49 |
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| Slovenia | 48 | 48 | 48 |
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| Solomon Islands | 48 | ||||||
| Somalia | |||||||
| South Africa | 49 | 49 |
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| South Sudan | |||||||
| Spain | 48 | 48 | 48 |
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| Sri Lanka | 49 | 49 | 49 |
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| St. Kitts and Nevis | 50 | 50 | 49 | 50 |
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| St. Lucia | 49 | 49 | 49 | 49 |
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| St. Martin (French part) | |||||||
| St. Vincent and the Grenadines | 47 | 48 | 48 |
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| Sudan | 46 | 46 |
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| Suriname | 48 | 48 | 48 |
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| Swaziland | 48 | 48 | 47 |
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| Sweden | 49 | 49 | 49 |
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| Switzerland | 48 | 48 | 48 |
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| Syrian Arab Republic | 48 | 48 | 48 | 48 |
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| Tajikistan | 48 | 48 | 48 | 48 |
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| Tanzania | 49 | 50 | 50 | 50 |
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| Thailand | 48 | 48 |
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| Timor-Leste | 47 | 48 | 48 | 48 |
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| Togo | 47 | 46 | 47 | 48 |
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| Tonga | |||||||
| Trinidad and Tobago | 48 | 48 | 48 |
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| Tunisia | 48 | 48 | 48 | 48 |
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| Turkey | 48 | 49 | 49 |
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| Turkmenistan | |||||||
| Turks and Caicos Islands | 49 | ||||||
| Tuvalu | |||||||
| Uganda | 50 | 50 | 50 | 50 |
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| Ukraine | 49 | 49 | 49 | 49 |
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| United Arab Emirates | 48 | 49 | 49 |
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| United Kingdom | 49 | 49 | 49 |
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| United States | 49 | 49 | 49 |
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| Uruguay | 48 | 48 | 48 |
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| Uzbekistan | 49 | 49 | 48 | 48 |
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| Vanuatu | 48 | 47 | 47 |
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| Venezuela, RB | 48 | 48 | 48 | 48 |
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| Vietnam | 48 | 47 | 47 |
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| Virgin Islands (U.S.) | |||||||
| West Bank and Gaza | 49 | 49 | 48 | 49 |
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| Yemen, Rep. | 44 | 44 | 44 |
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| Zambia | 49 | 50 | 50 | 50 |
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| Zimbabwe |