| Country name | 2004 | 2005 | 2006 | 2007 | 2008 |
|---|---|---|---|---|---|
| Afghanistan | 165 | 165 | 165 | 165 | |
| Albania | 15 | 14 | 13 | 13 | |
| Algeria | 38 | 37 | 37 | 36 | |
| Andorra | 3.20 | 3.10 | 3.00 | 3.00 | |
| Angola | 134 | 133 | 132 | 130 | |
| Antigua and Barbuda | 13 | 12 | 12 | 11 | |
| Argentina | 16 | 15 | 15 | 15 | |
| Armenia | 24 | 23 | 22 | 21 | |
| Australia | 5.00 | 5.00 | 4.90 | 4.90 | |
| Austria | 4.00 | 3.80 | 3.60 | 3.40 | |
| Azerbaijan | 40 | 37 | 34 | 32 | |
| Bahamas, The | 11 | 10.00 | 9.40 | 8.90 | |
| Bahrain | 9.90 | 9.80 | 9.70 | 9.60 | |
| Bangladesh | 51 | 48 | 45 | 43 | |
| Barbados | 11 | 11 | 10 | 10 | |
| Belarus | 13 | 12 | 12 | 11 | |
| Belgium | 4.00 | 4.00 | 3.90 | 3.90 | |
| Belize | 19 | 18 | 18 | 17 | |
| Benin | 81 | 79 | 78 | 76 | |
| Bhutan | 59 | 57 | 56 | 54 | |
| Bolivia | 53 | 50 | 48 | 46 | |
| Bosnia and Herzegovina | 13 | 13 | 13 | 13 | |
| Botswana | 29 | 27 | 26 | 26 | |
| Brazil | 22 | 20 | 19 | 18 | |
| Brunei Darussalam | 5.80 | 5.70 | 5.60 | 5.50 | |
| Bulgaria | 11 | 10 | 9.50 | 8.80 | |
| Burkina Faso | 96 | 95 | 93 | 92 | |
| Burundi | 104 | 103 | 103 | 102 | |
| Cambodia | 73 | 72 | 71 | 69 | |
| Cameroon | 86 | 85 | 83 | 82 | |
| Canada | 5.40 | 5.50 | 5.60 | 5.70 | |
| Cape Verde | 27 | 26 | 25 | 24 | |
| Central African Republic | 117 | 116 | 116 | 115 | |
| Chad | 124 | 124 | 124 | 124 | |
| Chile | 7.80 | 7.60 | 7.40 | 7.20 | |
| China | 22 | 20 | 19 | 18 | |
| Colombia | 18 | 18 | 17 | 16 | |
| Comoros | 78 | 77 | 76 | 75 | |
| Congo, Dem. Rep. of | 126 | 126 | 126 | 126 | |
| Congo, Rep. | 77 | 78 | 79 | 80 | |
| Costa Rica | 11 | 10 | 10 | 9.55 | |
| Cote d'Ivoire | 86 | 84 | 82 | 81 | |
| Croatia | 5.80 | 5.60 | 5.30 | 5.10 | |
| Cuba | 5.50 | 5.20 | 5.00 | 4.80 | |
| Cyprus | 3.80 | 3.70 | 3.60 | 3.50 | |
| Czech Republic | 3.50 | 3.40 | 3.30 | 3.10 | |
| Denmark | 4.20 | 4.00 | 3.90 | 3.70 | |
| Djibouti | 79 | 78 | 77 | 76 | |
| Dominica | 11 | 10 | 9.80 | 9.30 | |
| Dominican Republic | 29 | 28 | 28 | 27 | |
| Ecuador | 24 | 23 | 22 | 21 | |
| Egypt, Arab Rep. | 25 | 23 | 21 | 20 | |
| El Salvador | 20 | 18 | 17 | 16 | |
| Equatorial Guinea | 94 | 93 | 91 | 90 | |
| Eritrea | 46 | 44 | 43 | 41 | |
| Estonia | 5.60 | 5.20 | 4.70 | 4.40 | |
| Ethiopia | 77 | 74 | 72 | 69 | |
| Fiji | 16 | 16 | 16 | 16 | |
| Finland | 3.00 | 2.90 | 2.80 | 2.70 | |
| France | 3.70 | 3.60 | 3.40 | 3.30 | |
| Gabon | 60 | 59 | 58 | 57 | |
| Gambia, The | 85 | 83 | 82 | 80 | |
| Georgia | 28 | 27 | 27 | 26 | |
| Germany | 3.90 | 3.80 | 3.70 | 3.70 | |
| Ghana | 58 | 55 | 53 | 51 | |
| Greece | 3.90 | 3.70 | 3.50 | 3.30 | |
| Grenada | 14 | 14 | 13 | 13 | |
| Guatemala | 32 | 31 | 30 | 29 | |
| Guinea | 98 | 95 | 93 | 90 | |
| Guinea-Bissau | 121 | 120 | 118 | 117 | |
| Guyana | 49 | 48 | 47 | 47 | |
| Haiti | 62 | 59 | 57 | 54 | |
| Honduras | 28 | 27 | 27 | 26 | |
| Hungary | 6.40 | 6.00 | 5.70 | 5.40 | |
| Iceland | 2.20 | 2.10 | 2.00 | 1.90 | |
| India | 58 | 56 | 54 | 52 | |
| Indonesia | 34 | 33 | 32 | 31 | |
| Iran, Islamic Rep. of | 31 | 30 | 28 | 27 | |
| Iraq | 37 | 36 | 36 | 36 | |
| Ireland | 4.30 | 3.80 | 3.40 | 3.00 | |
| Israel | 4.40 | 4.10 | 3.90 | 3.60 | |
| Italy | 3.60 | 3.40 | 3.20 | 3.00 | |
| Jamaica | 26 | 26 | 26 | 26 | |
| Japan | 2.80 | 2.80 | 2.70 | 2.60 | 2.50 |
| Jordan | 19 | 18 | 18 | 17 | |
| Kazakhstan | 31 | 29 | 28 | 27 | |
| Kenya | 80 | 80 | 80 | 81 | |
| Kiribati | 42 | 41 | 40 | 38 | |
| Korea, D.P.R. of | 42 | 42 | 42 | 42 | |
| Korea, Rep. of | 5.19 | 5.00 | 4.82 | 4.73 | |
| Kuwait | 9.70 | 9.60 | 9.50 | 9.40 | |
| Kyrgyz Republic | 37 | 36 | 34 | 33 | |
| Lao P.D.R. | 53 | 51 | 49 | 48 | |
| Latvia | 8.50 | 8.30 | 8.10 | 7.90 | |
| Lebanon | 15 | 14 | 13 | 12 | |
| Lesotho | 74 | 70 | 67 | 63 | |
| Liberia | 107 | 105 | 103 | 100 | |
| Libya | 17 | 17 | 16 | 15 | |
| Liechtenstein | 3.00 | 2.50 | 2.10 | 1.76 | |
| Lithuania | 6.80 | 6.60 | 6.30 | 6.10 | |
| Luxembourg | 3.00 | 2.60 | 2.20 | 1.90 | |
| Macedonia, FYR | 13 | 12 | 11 | 10 | |
| Madagascar | 73 | 71 | 70 | 68 | |
| Malawi | 78 | 73 | 69 | 65 | |
| Malaysia | 6.96 | 6.61 | 6.27 | 5.92 | |
| Maldives | 30 | 28 | 26 | 24 | |
| Mali | 109 | 107 | 105 | 103 | |
| Malta | 5.40 | 5.40 | 5.40 | 5.50 | |
| Marshall Islands | 30 | 30 | 30 | 30 | |
| Mauritania | 76 | 75 | 75 | 75 | |
| Mauritius | 13 | 14 | 15 | 15 | |
| Mexico | 18 | 17 | 16 | 15 | |
| Micronesia, Fed. States of | 34 | 34 | 33 | 32 | |
| Moldova | 17 | 16 | 16 | 15 | |
| Monaco | 3.50 | 3.50 | 3.50 | 3.40 | |
| Mongolia | 39 | 37 | 35 | 34 | |
| Montenegro | 8.80 | 8.10 | 7.50 | 6.90 | |
| Morocco | 37 | 35 | 34 | 32 | |
| Mozambique | 103 | 98 | 94 | 90 | |
| Myanmar | 73 | 72 | 71 | 71 | |
| Namibia | 41 | 34 | 32 | 31 | |
| Nepal | 48 | 46 | 43 | 41 | |
| Netherlands, The | 4.50 | 4.30 | 4.10 | 4.00 | |
| New Zealand | 5.30 | 5.30 | 5.20 | 5.00 | 4.90 |
| Nicaragua | 27 | 25 | 24 | 23 | |
| Niger | 88 | 85 | 82 | 79 | |
| Nigeria | 100 | 99 | 97 | 96 | |
| Norway | 3.20 | 3.10 | 3.00 | 2.90 | |
| Oman | 11 | 11 | 11 | 10 | |
| Pakistan | 76 | 75 | 73 | 72 | |
| Palau | 14 | 13 | 13 | 13 | |
| Panama | 20 | 20 | 19 | 19 | |
| Papua New Guinea | 54 | 54 | 53 | 53 | |
| Paraguay | 25 | 25 | 24 | 24 | |
| Peru | 27 | 25 | 23 | 22 | |
| Philippines | 27 | 26 | 26 | 26 | |
| Poland | 6.40 | 6.20 | 6.00 | 5.80 | |
| Portugal | 3.70 | 3.40 | 3.10 | 2.90 | |
| Qatar | 10 | 9.90 | 9.55 | 9.21 | |
| Romania | 15 | 14 | 13 | 12 | |
| Russian Federation | 15 | 14 | 13 | 12 | |
| Rwanda | 85 | 80 | 76 | 72 | |
| Samoa | 24 | 23 | 23 | 22 | |
| San Marino | 2.20 | 1.80 | 1.40 | 1.20 | |
| Sao Tome and Principe | 64 | 64 | 64 | 64 | |
| Saudi Arabia | 19 | 19 | 19 | 18 | |
| Senegal | 60 | 59 | 58 | 57 | |
| Serbia | 7.90 | 7.30 | 6.80 | 6.30 | |
| Seychelles | 11 | 11 | 11 | 11 | |
| Sierra Leone | 133 | 130 | 127 | 123 | |
| Singapore | 2.30 | 2.30 | 2.30 | 2.30 | |
| Slovak Republic | 6.90 | 6.80 | 6.70 | 6.60 | |
| Slovenia | 3.50 | 3.30 | 3.10 | 2.90 | |
| Solomon Islands | 30 | 30 | 30 | 30 | |
| Somalia | 119 | 119 | 119 | 119 | |
| South Africa | 50 | 49 | 47 | 48 | |
| Spain | 3.20 | 3.80 | 3.70 | 3.60 | 3.50 |
| Sri Lanka | 15 | 14 | 14 | 13 | |
| St. Kitts and Nevis | 15 | 15 | 14 | 14 | |
| St. Lucia | 14 | 13 | 13 | 13 | |
| St. Vincent and the Grenadines | 14 | 13 | 13 | 12 | |
| Sudan | 71 | 71 | 70 | 70 | |
| Suriname | 28 | 26 | 25 | 25 | |
| Swaziland | 66 | 64 | 62 | 59 | |
| Sweden | 2.80 | 2.70 | 2.50 | 2.30 | |
| Switzerland | 4.30 | 4.20 | 4.10 | 4.00 | |
| Syrian Arab Republic | 16 | 15 | 15 | 14 | |
| Tajikistan | 62 | 59 | 57 | 54 | |
| Tanzania | 74 | 72 | 69 | 67 | |
| Thailand | 14 | 14 | 13 | 13 | |
| Timor-Leste | 83 | 80 | 77 | 75 | |
| Togo | 68 | 67 | 65 | 64 | |
| Tonga | 17 | 17 | 17 | 17 | |
| Trinidad and Tobago | 31 | 31 | 31 | 31 | |
| Tunisia | 20 | 19 | 19 | 18 | |
| Turkey | 25 | 23 | 21 | 20 | |
| Turkmenistan | 49 | 47 | 45 | 43 | |
| Uganda | 89 | 88 | 86 | 85 | |
| Ukraine | 15 | 14 | 14 | 14 | |
| United Arab Emirates | 8.00 | 7.65 | 7.39 | 7.05 | |
| United Kingdom | 5.10 | 5.00 | 4.90 | 4.90 | |
| United States | 6.80 | 6.80 | 6.70 | 6.70 | |
| Uruguay | 13 | 13 | 12 | 12 | |
| Uzbekistan | 40 | 38 | 36 | 34 | |
| Vanuatu | 26 | 27 | 27 | 27 | |
| Venezuela, R.B. de | 17 | 17 | 16 | 16 | |
| Vietnam | 15 | 14 | 13 | 12 | |
| West Bank and Gaza | 24 | 24 | 24 | 24 | |
| Yemen, Rep. of | 59 | 57 | 55 | 53 | |
| Zambia | 97 | 96 | 94 | 92 | |
| Zimbabwe | 63 | 62 | 62 | 62 |