| Rank | Country | Value | Year |
|---|---|---|---|
| 1 | Nauru | 58.7 | 2016 |
| 2 | Palau | 51.8 | 2016 |
| 3 | Marshall Islands | 48.4 | 2016 |
| 4 | Tuvalu | 47 | 2016 |
| 5 | Kiribati | 41.6 | 2016 |
| 6 | Tonga | 41.4 | 2016 |
| 7 | Micronesia, Fed. Sts. | 40.1 | 2016 |
| 8 | Samoa | 39.9 | 2016 |
| 9 | United States | 35.5 | 2016 |
| 10 | Kuwait | 33.3 | 2016 |
| 11 | Qatar | 32.5 | 2016 |
| 12 | Saudi Arabia | 30.8 | 2016 |
| 13 | New Zealand | 30.1 | 2016 |
| 14 | Australia | 29.6 | 2016 |
| 15 | Canada | 29.5 | 2016 |
| 16 | Malta | 29.2 | 2016 |
| 17 | Hungary | 28.2 | 2016 |
| 18 | Jordan | 28.2 | 2016 |
| 19 | United Arab Emirates | 27.5 | 2016 |
| 20 | Lebanon | 27.4 | 2016 |
| 21 | Argentina | 27.3 | 2016 |
| 22 | United Kingdom | 26.9 | 2016 |
| 23 | Czechia | 26.4 | 2016 |
| 24 | Andorra | 25.9 | 2016 |
| 25 | Israel | 25.9 | 2016 |
| 26 | Bahrain | 25.5 | 2016 |
| 27 | Bulgaria | 25.5 | 2016 |
| 28 | Fiji | 25.1 | 2016 |
| 29 | Ireland | 25.1 | 2016 |
| 30 | Libya | 25 | 2016 |
| 31 | Chile | 24.9 | 2016 |
| 32 | Uruguay | 24.9 | 2016 |
| 33 | Spain | 24.6 | 2016 |
| 34 | Luxembourg | 24.5 | 2016 |
| 35 | Bahamas, The | 24.4 | 2016 |
| 36 | Turkiye | 24.4 | 2016 |
| 37 | Mexico | 24.3 | 2016 |
| 38 | Germany | 24.2 | 2016 |
| 39 | Greece | 24.2 | 2016 |
| 40 | Iceland | 24.2 | 2016 |
| 41 | Lithuania | 24.2 | 2016 |
| 42 | Croatia | 24.1 | 2016 |
| 43 | Finland | 23.7 | 2016 |
| 44 | Poland | 23.7 | 2016 |
| 45 | Norway | 23.6 | 2016 |
| 46 | Iraq | 23.4 | 2016 |
| 47 | Romania | 23.4 | 2016 |
| 48 | Montenegro | 23.3 | 2016 |
| 49 | Belgium | 23.1 | 2016 |
| 50 | Sweden | 23.1 | 2016 |
| 51 | Oman | 22.9 | 2016 |
| 52 | Egypt, Arab Rep. | 22.7 | 2016 |
| 53 | North Macedonia | 22.6 | 2016 |
| 54 | Venezuela, RB | 22.4 | 2016 |
| 55 | Denmark | 22.3 | 2016 |
| 56 | Switzerland | 22.2 | 2016 |
| 57 | Belarus | 22.1 | 2016 |
| 58 | France | 22 | 2016 |
| 59 | Ukraine | 22 | 2016 |
| 60 | Austria | 21.9 | 2016 |
| 61 | Cyprus | 21.9 | 2016 |
| 62 | Albania | 21.6 | 2016 |
| 63 | Latvia | 21.6 | 2016 |
| 64 | Costa Rica | 21.1 | 2016 |
| 65 | Serbia | 21.1 | 2016 |
| 66 | Dominican Republic | 21 | 2016 |
| 67 | Slovak Republic | 21 | 2016 |
| 68 | Syrian Arab Republic | 20.9 | 2016 |
| 69 | Netherlands | 20.8 | 2016 |
| 70 | Estonia | 20.3 | 2016 |
| 71 | Portugal | 20.3 | 2016 |
| 72 | Vanuatu | 20.2 | 2016 |
| 73 | Italy | 20.1 | 2016 |
| 74 | Algeria | 19.9 | 2016 |
| 75 | Dominica | 19.9 | 2016 |
| 76 | Morocco | 19.4 | 2016 |
| 77 | Slovenia | 19.4 | 2016 |
| 78 | Iran, Islamic Rep. | 19.3 | 2016 |
| 79 | Georgia | 19.2 | 2016 |
| 80 | Tunisia | 19.1 | 2016 |
| 81 | Cuba | 18.9 | 2016 |
| 82 | El Salvador | 18.9 | 2016 |
| 83 | Kazakhstan | 18.9 | 2016 |
| 84 | Suriname | 18.9 | 2016 |
| 85 | Brazil | 18.5 | 2016 |
| 86 | Russian Federation | 18.1 | 2016 |
| 87 | Haiti | 17.9 | 2016 |
| 88 | Nicaragua | 17.9 | 2016 |
| 89 | Solomon Islands | 17.9 | 2016 |
| 90 | Panama | 17.8 | 2016 |
| 91 | Colombia | 17.6 | 2016 |
| 92 | Mongolia | 17.5 | 2016 |
| 93 | Armenia | 17.1 | 2016 |
| 94 | Bosnia and Herzegovina | 17.1 | 2016 |
| 95 | Paraguay | 17.1 | 2016 |
| 96 | Papua New Guinea | 16.6 | 2016 |
| 97 | St. Vincent and the Grenadines | 16.6 | 2016 |
| 98 | Belize | 16.5 | 2016 |
| 99 | Moldova | 16.2 | 2016 |
| 100 | Turkmenistan | 15.9 | 2016 |
| 101 | Azerbaijan | 15.8 | 2016 |
| 102 | Honduras | 15.6 | 2016 |
| 103 | South Africa | 15.4 | 2016 |
| 104 | Jamaica | 15.3 | 2016 |
| 105 | St. Kitts and Nevis | 15.3 | 2016 |
| 106 | Peru | 15.2 | 2016 |
| 107 | Guatemala | 15.1 | 2016 |
| 108 | Ecuador | 14.9 | 2016 |
| 109 | Barbados | 14.7 | 2016 |
| 110 | Bolivia | 14.5 | 2016 |
| 111 | Kyrgyz Republic | 14 | 2016 |
| 112 | Uzbekistan | 13.8 | 2016 |
| 113 | Grenada | 13.3 | 2016 |
| 114 | Malaysia | 13 | 2016 |
| 115 | Guyana | 12.7 | 2016 |
| 116 | Brunei Darussalam | 12.5 | 2016 |
| 117 | St. Lucia | 12 | 2016 |
| 118 | Yemen, Rep. | 12 | 2016 |
| 119 | Antigua and Barbuda | 11.6 | 2016 |
| 120 | Tajikistan | 11.6 | 2016 |
| 121 | Trinidad and Tobago | 10.8 | 2016 |
| 122 | Gabon | 9.6 | 2016 |
| 123 | Djibouti | 8.6 | 2016 |
| 124 | Botswana | 8.1 | 2016 |
| 125 | Seychelles | 7.6 | 2016 |
| 126 | Namibia | 7.5 | 2016 |
| 127 | Sao Tome and Principe | 7.2 | 2016 |
| 128 | Thailand | 7 | 2016 |
| 129 | Cabo Verde | 6.9 | 2016 |
| 130 | Mauritania | 6.6 | 2016 |
| 131 | Cameroon | 6.1 | 2016 |
| 132 | Korea, Dem. People's Rep. | 6.1 | 2016 |
| 133 | Pakistan | 6 | 2016 |
| 134 | China | 5.9 | 2016 |
| 135 | Cote d'Ivoire | 5.8 | 2016 |
| 136 | Maldives | 5.8 | 2016 |
| 137 | Singapore | 5.8 | 2016 |
| 138 | Gambia, The | 5.6 | 2016 |
| 139 | Mauritius | 5.6 | 2016 |
| 140 | Congo, Rep. | 5.5 | 2016 |
| 141 | Liberia | 5.5 | 2016 |
| 142 | Eswatini | 5.4 | 2016 |
| 143 | Philippines | 5.2 | 2016 |
| 144 | Guinea-Bissau | 5 | 2016 |
| 145 | Indonesia | 4.8 | 2016 |
| 146 | Japan | 4.8 | 2016 |
| 147 | Benin | 4.7 | 2016 |
| 148 | Bhutan | 4.7 | 2016 |
| 149 | Zimbabwe | 4.7 | 2016 |
| 150 | Lesotho | 4.6 | 2016 |
| 151 | Mali | 4.6 | 2016 |
| 152 | Nigeria | 4.6 | 2016 |
| 153 | Ghana | 4.5 | 2016 |
| 154 | Korea, Rep. | 4.4 | 2016 |
| 155 | Angola | 4 | 2016 |
| 156 | Myanmar | 4 | 2016 |
| 157 | Senegal | 4 | 2016 |
| 158 | Tanzania | 4 | 2016 |
| 159 | Somalia | 3.9 | 2016 |
| 160 | Togo | 3.9 | 2016 |
| 161 | Equatorial Guinea | 3.8 | 2016 |
| 162 | Sierra Leone | 3.8 | 2016 |
| 163 | Central African Republic | 3.7 | 2016 |
| 164 | Guinea | 3.7 | 2016 |
| 165 | Lao PDR | 3.7 | 2016 |
| 166 | Congo, Dem. Rep. | 3.6 | 2016 |
| 167 | Zambia | 3.6 | 2016 |
| 168 | Comoros | 3.3 | 2016 |
| 169 | Mozambique | 3.3 | 2016 |
| 170 | Afghanistan | 3.2 | 2016 |
| 171 | Chad | 3.1 | 2016 |
| 172 | Madagascar | 3 | 2016 |
| 173 | Sri Lanka | 2.9 | 2016 |
| 174 | Kenya | 2.8 | 2016 |
| 175 | Cambodia | 2.7 | 2016 |
| 176 | India | 2.7 | 2016 |
| 177 | Nepal | 2.7 | 2016 |
| 178 | Burkina Faso | 2.6 | 2016 |
| 179 | Timor-Leste | 2.6 | 2016 |
| 180 | Niger | 2.5 | 2016 |
| 181 | Bangladesh | 2.3 | 2016 |
| 182 | Malawi | 2.2 | 2016 |
| 183 | Burundi | 2.1 | 2016 |
| 184 | Eritrea | 2 | 2016 |
| 185 | Ethiopia | 1.9 | 2016 |
| 186 | Rwanda | 1.9 | 2016 |
| 187 | Uganda | 1.8 | 2016 |
| 188 | Viet Nam | 1.6 | 2016 |