| Rank | Country | Value | Year |
|---|---|---|---|
| 1 | Nauru | 63.3 | 2016 |
| 2 | Palau | 58.8 | 2016 |
| 3 | Marshall Islands | 57.3 | 2016 |
| 4 | Tuvalu | 56.2 | 2016 |
| 5 | Samoa | 55 | 2016 |
| 6 | Tonga | 54.5 | 2016 |
| 7 | Micronesia, Fed. Sts. | 51.5 | 2016 |
| 8 | Kiribati | 50.4 | 2016 |
| 9 | Kuwait | 45.6 | 2016 |
| 10 | Jordan | 43.1 | 2016 |
| 11 | Qatar | 43.1 | 2016 |
| 12 | Saudi Arabia | 42.3 | 2016 |
| 13 | Egypt, Arab Rep. | 41.1 | 2016 |
| 14 | United Arab Emirates | 41 | 2016 |
| 15 | Libya | 39.6 | 2016 |
| 16 | South Africa | 39.6 | 2016 |
| 17 | Turkiye | 39.2 | 2016 |
| 18 | Bahamas, The | 38.1 | 2016 |
| 19 | Iraq | 37 | 2016 |
| 20 | Lebanon | 37 | 2016 |
| 21 | United States | 37 | 2016 |
| 22 | Bahrain | 36.8 | 2016 |
| 23 | Dominica | 35.6 | 2016 |
| 24 | Fiji | 35.3 | 2016 |
| 25 | Algeria | 34.9 | 2016 |
| 26 | Syrian Arab Republic | 34.8 | 2016 |
| 27 | Tunisia | 34.3 | 2016 |
| 28 | Dominican Republic | 34.1 | 2016 |
| 29 | Oman | 33.7 | 2016 |
| 30 | Suriname | 33.7 | 2016 |
| 31 | Jamaica | 33.4 | 2016 |
| 32 | Mexico | 32.8 | 2016 |
| 33 | Iran, Islamic Rep. | 32.2 | 2016 |
| 34 | Morocco | 32.2 | 2016 |
| 35 | Belize | 31.5 | 2016 |
| 36 | New Zealand | 31.4 | 2016 |
| 37 | Barbados | 31.3 | 2016 |
| 38 | Chile | 31 | 2016 |
| 39 | St. Vincent and the Grenadines | 31 | 2016 |
| 40 | Uruguay | 30.6 | 2016 |
| 41 | Costa Rica | 30.4 | 2016 |
| 42 | Cuba | 30.3 | 2016 |
| 43 | St. Kitts and Nevis | 30.1 | 2016 |
| 44 | Vanuatu | 30.1 | 2016 |
| 45 | Botswana | 29.3 | 2016 |
| 46 | Canada | 29.3 | 2016 |
| 47 | Argentina | 29 | 2016 |
| 48 | Grenada | 29 | 2016 |
| 49 | Nicaragua | 29 | 2016 |
| 50 | El Salvador | 28.9 | 2016 |
| 51 | United Kingdom | 28.6 | 2016 |
| 52 | Venezuela, RB | 28.6 | 2016 |
| 53 | Malta | 28.5 | 2016 |
| 54 | Australia | 28.4 | 2016 |
| 55 | Lithuania | 27.8 | 2016 |
| 56 | Panama | 27.6 | 2016 |
| 57 | Guyana | 27.1 | 2016 |
| 58 | Solomon Islands | 27.1 | 2016 |
| 59 | St. Lucia | 27 | 2016 |
| 60 | Haiti | 26.9 | 2016 |
| 61 | Honduras | 26.9 | 2016 |
| 62 | Russian Federation | 26.9 | 2016 |
| 63 | Lesotho | 26.7 | 2016 |
| 64 | Colombia | 26.6 | 2016 |
| 65 | Guatemala | 26.4 | 2016 |
| 66 | Belarus | 26.3 | 2016 |
| 67 | Eswatini | 26.2 | 2016 |
| 68 | Israel | 26.2 | 2016 |
| 69 | Trinidad and Tobago | 26 | 2016 |
| 70 | Antigua and Barbuda | 25.9 | 2016 |
| 71 | Papua New Guinea | 25.8 | 2016 |
| 72 | Ukraine | 25.7 | 2016 |
| 73 | Bolivia | 25.6 | 2016 |
| 74 | Ireland | 25.5 | 2016 |
| 75 | Brazil | 25.4 | 2016 |
| 76 | Czechia | 25.4 | 2016 |
| 77 | Greece | 25.4 | 2016 |
| 78 | Namibia | 25.4 | 2016 |
| 79 | Andorra | 25.3 | 2016 |
| 80 | Zimbabwe | 25.3 | 2016 |
| 81 | Latvia | 25.1 | 2016 |
| 82 | Ecuador | 24.7 | 2016 |
| 83 | Hungary | 24.6 | 2016 |
| 84 | Croatia | 24.5 | 2016 |
| 85 | Bulgaria | 24.3 | 2016 |
| 86 | Peru | 24.2 | 2016 |
| 87 | Georgia | 23.8 | 2016 |
| 88 | Azerbaijan | 23.6 | 2016 |
| 89 | Paraguay | 23.4 | 2016 |
| 90 | Mongolia | 23.2 | 2016 |
| 91 | Montenegro | 23.1 | 2016 |
| 92 | Armenia | 23 | 2016 |
| 93 | Spain | 22.8 | 2016 |
| 94 | Kazakhstan | 22.7 | 2016 |
| 95 | Norway | 22.5 | 2016 |
| 96 | Poland | 22.2 | 2016 |
| 97 | North Macedonia | 22.1 | 2016 |
| 98 | Yemen, Rep. | 22 | 2016 |
| 99 | Albania | 21.8 | 2016 |
| 100 | Estonia | 21.8 | 2016 |
| 101 | Serbia | 21.8 | 2016 |
| 102 | Cyprus | 21.6 | 2016 |
| 103 | Romania | 21.6 | 2016 |
| 104 | Portugal | 21.2 | 2016 |
| 105 | France | 21.1 | 2016 |
| 106 | Moldova | 21.1 | 2016 |
| 107 | Belgium | 21 | 2016 |
| 108 | Slovenia | 21 | 2016 |
| 109 | Turkmenistan | 20.9 | 2016 |
| 110 | Luxembourg | 20.7 | 2016 |
| 111 | Finland | 20.6 | 2016 |
| 112 | Seychelles | 20.5 | 2016 |
| 113 | Germany | 20.4 | 2016 |
| 114 | Gabon | 20.3 | 2016 |
| 115 | Netherlands | 20 | 2016 |
| 116 | Slovak Republic | 19.9 | 2016 |
| 117 | Italy | 19.5 | 2016 |
| 118 | Iceland | 19.4 | 2016 |
| 119 | Uzbekistan | 19 | 2016 |
| 120 | Kyrgyz Republic | 18.6 | 2016 |
| 121 | Mauritania | 18.5 | 2016 |
| 122 | Bosnia and Herzegovina | 18.4 | 2016 |
| 123 | Austria | 18.3 | 2016 |
| 124 | Djibouti | 18.3 | 2016 |
| 125 | Sweden | 18.1 | 2016 |
| 126 | Malaysia | 17.9 | 2016 |
| 127 | Denmark | 17 | 2016 |
| 128 | Sao Tome and Principe | 16.9 | 2016 |
| 129 | Switzerland | 16.9 | 2016 |
| 130 | Tajikistan | 16.7 | 2016 |
| 131 | Ghana | 16.6 | 2016 |
| 132 | Cameroon | 16.4 | 2016 |
| 133 | Cabo Verde | 16.3 | 2016 |
| 134 | Brunei Darussalam | 15.7 | 2016 |
| 135 | Mauritius | 15.7 | 2016 |
| 136 | Cote d'Ivoire | 15.2 | 2016 |
| 137 | Gambia, The | 14.8 | 2016 |
| 138 | Benin | 14.2 | 2016 |
| 139 | Liberia | 14.2 | 2016 |
| 140 | Guinea-Bissau | 13.7 | 2016 |
| 141 | Congo, Rep. | 13.5 | 2016 |
| 142 | Sierra Leone | 13.3 | 2016 |
| 143 | Nigeria | 13.1 | 2016 |
| 144 | Senegal | 12.9 | 2016 |
| 145 | Tanzania | 12.7 | 2016 |
| 146 | Thailand | 12.7 | 2016 |
| 147 | Equatorial Guinea | 12.6 | 2016 |
| 148 | Togo | 12.5 | 2016 |
| 149 | Mali | 12.4 | 2016 |
| 150 | Zambia | 12.4 | 2016 |
| 151 | Somalia | 12.3 | 2016 |
| 152 | Comoros | 12.2 | 2016 |
| 153 | Angola | 12.1 | 2016 |
| 154 | Guinea | 11.5 | 2016 |
| 155 | Maldives | 11.4 | 2016 |
| 156 | Pakistan | 11.3 | 2016 |
| 157 | Kenya | 11.1 | 2016 |
| 158 | Central African Republic | 10.9 | 2016 |
| 159 | Mozambique | 10.5 | 2016 |
| 160 | Congo, Dem. Rep. | 9.7 | 2016 |
| 161 | Rwanda | 9.3 | 2016 |
| 162 | Malawi | 9.1 | 2016 |
| 163 | Chad | 8.9 | 2016 |
| 164 | Indonesia | 8.9 | 2016 |
| 165 | Niger | 8.7 | 2016 |
| 166 | Burundi | 8.6 | 2016 |
| 167 | Uganda | 8.6 | 2016 |
| 168 | Bhutan | 8.5 | 2016 |
| 169 | Burkina Faso | 8.1 | 2016 |
| 170 | Afghanistan | 7.6 | 2016 |
| 171 | Eritrea | 7.6 | 2016 |
| 172 | Madagascar | 7.5 | 2016 |
| 173 | Philippines | 7.5 | 2016 |
| 174 | Korea, Dem. People's Rep. | 7.3 | 2016 |
| 175 | Myanmar | 7.3 | 2016 |
| 176 | Sri Lanka | 7.3 | 2016 |
| 177 | Ethiopia | 6.9 | 2016 |
| 178 | Lao PDR | 6.7 | 2016 |
| 179 | China | 6.5 | 2016 |
| 180 | Singapore | 6.3 | 2016 |
| 181 | Nepal | 5.4 | 2016 |
| 182 | India | 5.1 | 2016 |
| 183 | Bangladesh | 5 | 2016 |
| 184 | Timor-Leste | 4.9 | 2016 |
| 185 | Cambodia | 4.8 | 2016 |
| 186 | Korea, Rep. | 4.8 | 2016 |
| 187 | Japan | 3.7 | 2016 |
| 188 | Viet Nam | 2.6 | 2016 |