| Country name | 2008 | 2009 | 2010 | 2011 | ||
|---|---|---|---|---|---|---|
| Afghanistan | 46 | 47 | 47 | 47 |
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| Albania | 26 | 26 |
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| Algeria | 11 | 11 | 11 | 11 |
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| American Samoa | 96 | 96 |
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| Andorra | 33 | 34 |
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| Angola | 42 | 42 | 43 | 43 |
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| Antigua and Barbuda | 100 | 101 |
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| Argentina | 35 | 35 | 35 | 35 |
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| Armenia | 56 | 56 | 56 | 56 |
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| Aruba | 66 | 66 |
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| Australia | 23 | 23 | 23 | 22 |
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| Austria | 30 | 30 | 30 | 30 |
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| Azerbaijan | 42 | 41 | 41 | 41 |
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| Bahamas, The | 87 | 87 |
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| Bahrain | 17 | 16 |
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| Bangladesh | 35 | 35 | 35 | 35 |
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| Barbados | 95 | 95 |
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| Belarus | 26 | 26 | 26 | 26 |
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| Belgium | 18 | 18 | 18 | 18 |
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| Belize | ||||||
| Benin | 22 | 22 | 22 | 21 |
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| Bermuda | 18 | 18 |
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| Bhutan | ||||||
| Bolivia | 26 | 25 | 25 | 25 |
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| Bosnia and Herzegovina | 22 | 22 |
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| Botswana | 17 | 16 |
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| Brazil | 12 | 12 | 12 | 12 |
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| Brunei Darussalam | 8 | 8 |
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| Bulgaria | 22 | 22 | 22 | 22 |
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| Burkina Faso | 44 | 45 | 45 | 45 |
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| Burundi | 54 | 54 |
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| Cambodia | 55 | 55 | 56 | 56 |
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| Cameroon | 21 | 21 | 21 | 21 |
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| Canada | 20 | 20 | 20 | 20 |
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| Cape Verde | 41 | 42 |
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| Cayman Islands | 55 | 57 |
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| Central African Republic | 42 | 42 |
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| Chad | 34 | 34 | 34 | 34 |
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| Chile | 39 | 39 | 39 | 39 |
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| China | 3 | 3 | 3 | 2 |
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| Colombia | 24 | 24 | 24 | 25 |
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| Comoros | 24 | 24 |
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| Congo, Dem. Rep. | 39 | 39 | 39 | 39 |
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| Congo, Rep. | 53 | 52 | 52 | 51 |
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| Costa Rica | 48 | 48 | 49 | 49 |
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| Cote d'Ivoire | 42 | 42 | 41 | 41 |
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| Croatia | 27 | 27 |
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| Cuba | 25 | 25 | 25 | 25 |
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| Curacao | ||||||
| Cyprus | 31 | 31 |
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| Czech Republic | 15 | 15 | 15 | 15 |
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| Denmark | 24 | 25 | 25 | 25 |
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| Djibouti | 85 | 84 |
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| Dominica | 31 | 31 |
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| Dominican Republic | 32 | 32 | 32 | 32 |
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| Ecuador | 28 | 28 | 28 | 28 |
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| Egypt, Arab Rep. | 32 | 32 | 31 | 31 |
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| El Salvador | 39 | 39 | 39 | 40 |
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| Equatorial Guinea | 48 | 48 |
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| Eritrea | 63 | 62 |
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| Estonia | 43 | 43 |
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| Ethiopia | 22 | 21 | 21 | 21 |
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| Faeroe Islands | 101 | 101 |
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| Fiji | 40 | 40 |
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| Finland | 25 | 25 | 25 | 25 |
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| France | 19 | 19 | 19 | 19 |
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| French Polynesia | 96 | 96 |
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| Gabon | 49 | 49 |
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| Gambia, The | 47 | 46 |
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| Georgia | 48 | 48 | 48 | 47 |
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| Germany | 6 | 6 | 6 | 6 |
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| Ghana | 19 | 19 | 19 | 19 |
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| Greece | 47 | 47 | 47 | 47 |
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| Greenland | 32 | 32 |
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| Grenada | 101 | 101 |
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| Guam | 92 | 92 |
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| Guatemala | 16 | 16 | 16 | 15 |
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| Guinea | 47 | 47 | 47 | 47 |
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| Guinea-Bissau | 49 | 48 |
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| Guyana | 62 | 62 |
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| Haiti | 53 | 53 | 41 | 41 |
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| Honduras | 26 | 26 | 26 | 26 |
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| Hong Kong SAR, China | 100 | 100 | 100 | 101 |
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| Hungary | 25 | 25 | 25 | 25 |
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| Iceland | 66 | 67 |
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| India | 6 | 6 | 6 | 6 |
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| Indonesia | 8 | 8 | 8 | 8 |
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| Iran, Islamic Rep. | 14 | 14 | 14 | 14 |
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| Iraq | 28 | 28 | 28 | 28 |
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| Ireland | 39 | 39 | 40 | 39 |
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| Isle of Man | 63 | 63 |
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| Israel | 47 | 47 | 47 | 47 |
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| Italy | 8 | 8 | 8 | 8 |
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| Jamaica | 41 | 41 |
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| Japan | 32 | 32 | 32 | 32 |
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| Jordan | 23 | 22 | 22 | 22 |
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| Kazakhstan | 16 | 16 | 16 | 16 |
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| Kenya | 37 | 37 | 37 | 37 |
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| Kiribati | 100 | 100 |
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| Korea, Dem. Rep. | 19 | 19 | 19 | 19 |
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| Korea, Rep. | 24 | 24 | 24 | 24 |
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| Kosovo | ||||||
| Kuwait | 86 | 86 | 86 | 86 |
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| Kyrgyz Republic | 45 | 45 | 45 | 45 |
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| Lao PDR | 41 | 41 | 40 | 40 |
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| Latvia | 47 | 47 |
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| Lebanon | 52 | 52 | 53 | 53 |
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| Lesotho | 40 | 39 |
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| Liberia | 55 | 48 | 43 | 39 |
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| Libya | 23 | 23 | 22 | 22 |
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| Liechtenstein | 99 | 99 |
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| Lithuania | 24 | 24 |
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| Luxembourg | 21 | 21 |
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| Macao SAR, China | 101 | 101 |
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| Macedonia, FYR | 39 | 39 |
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| Madagascar | 29 | 29 | 28 | 28 |
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| Malawi | 36 | 37 | 37 | 38 |
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| Malaysia | 8 | 8 | 7 | 7 |
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| Maldives | 99 | 100 |
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| Mali | 33 | 32 | 32 | 32 |
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| Malta | 51 | 51 |
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| Marshall Islands | 77 | 78 |
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| Mauritania | 51 | 51 |
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| Mauritius | 28 | 28 |
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| Mexico | 22 | 22 | 22 | 22 |
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| Micronesia, Fed. Sts. | 28 | 28 |
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| Moldova | 39 | 39 |
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| Monaco | 93 | 93 |
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| Mongolia | 53 | 53 | 52 | 51 |
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| Montenegro | 36 | 36 |
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| Morocco | 18 | 18 | 18 | 18 |
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| Mozambique | 22 | 23 | 23 | 23 |
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| Myanmar | 28 | 28 | 28 | 28 |
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| Namibia | 41 | 41 |
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| Nepal | 20 | 21 | 21 | 21 |
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| Netherlands | 8 | 8 | 8 | 8 |
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| New Caledonia | 93 | 94 |
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| New Zealand | 36 | 37 | 37 | 38 |
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| Nicaragua | 29 | 29 | 28 | 28 |
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| Niger | 39 | 38 | 38 | 38 |
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| Nigeria | 14 | 14 | 14 | 14 |
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| Northern Mariana Islands | 136 | 141 |
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| Norway | 23 | 23 | 23 | 23 |
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| Oman | 33 | 32 |
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| Pakistan | 21 | 21 | 21 | 21 |
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| Palau | 76 | 74 |
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| Panama | 53 | 53 | 53 | 53 |
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| Papua New Guinea | 38 | 38 |
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| Paraguay | 51 | 51 | 51 | 51 |
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| Peru | 40 | 40 | 40 | 40 |
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| Philippines | 26 | 26 | 26 | 25 |
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| Poland | 7 | 7 | 7 | 7 |
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| Portugal | 44 | 44 | 44 | 44 |
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| Puerto Rico | 73 | 74 | 75 | 75 |
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| Qatar | 30 | 27 |
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| Romania | 17 | 17 | 17 | 17 |
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| Russian Federation | 10 | 10 | 10 | 10 |
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| Rwanda | 48 | 47 | 57 |
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| Samoa | 98 | 98 |
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| San Marino | 15 | 15 |
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| Sao Tome and Principe | 61 | 60 |
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| Saudi Arabia | 22 | 22 | 22 | 21 |
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| Senegal | 55 | 55 | 54 | 54 |
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| Serbia | 27 | 27 | 27 | 27 |
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| Seychelles | 56 | 56 |
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| Sierra Leone | 40 | 40 | 39 | 39 |
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| Singapore | 95 | 95 | 95 | 95 |
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| Sint Maarten (Dutch part) | ||||||
| Slovak Republic | ||||||
| Slovenia | 26 | 25 |
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| Solomon Islands | 71 | 70 |
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| Somalia | 38 | 40 | 43 | 43 |
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| South Africa | 12 | 12 | 12 | 12 |
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| South Sudan | ||||||
| Spain | 16 | 16 | 16 | 17 |
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| Sri Lanka | 22 | 22 |
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| St. Kitts and Nevis | 78 | 78 |
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| St. Lucia | 43 | 46 |
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| St. Martin (French part) | ||||||
| St. Vincent and the Grenadines | 53 | 53 |
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| Sudan | 40 | 40 | 40 |
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| Suriname | 73 | 72 |
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| Swaziland | 33 | 33 |
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| Sweden | 16 | 16 | 16 | 16 |
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| Switzerland | 20 | 20 | 20 | 20 |
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| Syrian Arab Republic | 27 | 27 | 27 | 27 |
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| Tajikistan | 39 | 39 |
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| Tanzania | 29 | 28 | 28 | 28 |
|
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| Thailand | 30 | 30 | 30 | 30 |
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| Timor-Leste | 55 | 54 |
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| Togo | 72 | 73 | 74 | 74 |
|
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| Tonga | 101 | 100 |
|
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| Trinidad and Tobago | 32 | 33 |
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| Tunisia | 11 | 11 | 11 | 11 |
|
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| Turkey | 21 | 21 | 21 | 20 |
|
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| Turkmenistan | 27 | 27 |
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| Turks and Caicos Islands | 18 | 18 |
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| Tuvalu | 101 | 102 |
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| Uganda | 33 | 32 | 32 | 31 |
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| Ukraine | 9 | 9 | 9 | 9 |
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| United Arab Emirates | 28 | 26 | 25 | 24 |
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| United Kingdom | 18 | 18 | 17 | 17 |
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| United States | 8 | 8 | 8 | 8 |
|
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| Uruguay | 53 | 53 | 53 | 53 |
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| Uzbekistan | 22 | 22 | 21 | 21 |
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| Vanuatu | 76 | 77 |
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| Venezuela, RB | 12 | 12 | 11 | 11 |
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| Vietnam | 23 | 23 | 23 | 23 |
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| Virgin Islands (U.S.) | 51 | 51 |
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| West Bank and Gaza | ||||||
| Yemen, Rep. | 31 | 31 | 31 | 31 |
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| Zambia | 29 | 29 | 29 | 28 |
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| Zimbabwe | 34 | 34 | 34 | 34 |
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