| Rank | Country | Value | Year |
|---|---|---|---|
| 1 | Nauru | 49.1 | 2020 |
| 2 | Serbia | 39.1 | 2020 |
| 3 | Bulgaria | 37.1 | 2020 |
| 4 | Croatia | 36.1 | 2020 |
| 5 | France | 31.9 | 2020 |
| 6 | Montenegro | 31.1 | 2020 |
| 7 | Greece | 30.5 | 2020 |
| 8 | Lebanon | 28.9 | 2020 |
| 9 | Andorra | 28.3 | 2020 |
| 10 | Bosnia and Herzegovina | 28 | 2020 |
| 11 | Hungary | 27.8 | 2020 |
| 12 | Kiribati | 27.3 | 2020 |
| 13 | Chile | 26.8 | 2020 |
| 14 | Spain | 26.7 | 2020 |
| 15 | Czechia | 26.4 | 2020 |
| 16 | Slovak Republic | 25.6 | 2020 |
| 17 | Papua New Guinea | 25.1 | 2020 |
| 18 | Austria | 25 | 2020 |
| 19 | Latvia | 23.7 | 2020 |
| 20 | Cyprus | 23.2 | 2020 |
| 21 | Estonia | 23 | 2020 |
| 22 | Switzerland | 22.9 | 2020 |
| 23 | Lithuania | 21.8 | 2020 |
| 24 | Malta | 21.6 | 2020 |
| 25 | Tuvalu | 21.3 | 2020 |
| 26 | Belgium | 21 | 2020 |
| 27 | Portugal | 20.2 | 2020 |
| 28 | Poland | 20.1 | 2020 |
| 29 | Romania | 20 | 2020 |
| 30 | Germany | 19.9 | 2020 |
| 31 | Netherlands | 19.9 | 2020 |
| 32 | Luxembourg | 19.8 | 2020 |
| 33 | Myanmar | 19.7 | 2020 |
| 34 | Argentina | 19.6 | 2020 |
| 35 | Slovenia | 19.6 | 2020 |
| 36 | Italy | 19.5 | 2020 |
| 37 | Solomon Islands | 19.2 | 2020 |
| 38 | Turkiye | 19.2 | 2020 |
| 39 | Ireland | 19 | 2020 |
| 40 | Uruguay | 18.5 | 2020 |
| 41 | Sweden | 18.2 | 2020 |
| 42 | United States | 17.5 | 2020 |
| 43 | Bangladesh | 17.1 | 2020 |
| 44 | Denmark | 17.1 | 2020 |
| 45 | Finland | 16.3 | 2020 |
| 46 | Norway | 15.4 | 2020 |
| 47 | Tonga | 15.3 | 2020 |
| 48 | Samoa | 14.5 | 2020 |
| 49 | Belarus | 13.5 | 2020 |
| 50 | Israel | 13.5 | 2020 |
| 51 | United Kingdom | 13.5 | 2020 |
| 52 | India | 13 | 2020 |
| 53 | Jordan | 12.8 | 2020 |
| 54 | Madagascar | 12.8 | 2020 |
| 55 | Nepal | 12.8 | 2020 |
| 56 | Russian Federation | 12.8 | 2020 |
| 57 | New Zealand | 12.3 | 2020 |
| 58 | Iceland | 12 | 2020 |
| 59 | Australia | 11.5 | 2020 |
| 60 | Ukraine | 11.5 | 2020 |
| 61 | Comoros | 11.1 | 2020 |
| 62 | Timor-Leste | 10.8 | 2020 |
| 63 | Canada | 10.7 | 2020 |
| 64 | Fiji | 10.5 | 2020 |
| 65 | Cuba | 10.3 | 2020 |
| 66 | Lao PDR | 10.3 | 2020 |
| 67 | Japan | 10 | 2020 |
| 68 | Brazil | 9.4 | 2020 |
| 69 | Botswana | 8.3 | 2020 |
| 70 | Marshall Islands | 8.3 | 2020 |
| 71 | Yemen, Rep. | 8.1 | 2020 |
| 72 | Palau | 7.9 | 2020 |
| 73 | Pakistan | 7.3 | 2020 |
| 74 | Afghanistan | 7.2 | 2020 |
| 75 | Rwanda | 7.2 | 2020 |
| 76 | Georgia | 7.1 | 2020 |
| 77 | Mongolia | 7.1 | 2020 |
| 78 | Kazakhstan | 6.7 | 2020 |
| 79 | Dominican Republic | 6.5 | 2020 |
| 80 | Philippines | 6.5 | 2020 |
| 81 | South Africa | 6.5 | 2020 |
| 82 | Burkina Faso | 6.4 | 2020 |
| 83 | Seychelles | 6.4 | 2020 |
| 84 | Sierra Leone | 6.4 | 2020 |
| 85 | Mexico | 6.2 | 2020 |
| 86 | Moldova | 6.2 | 2020 |
| 87 | Burundi | 6.1 | 2020 |
| 88 | Albania | 6 | 2020 |
| 89 | Cambodia | 6 | 2020 |
| 90 | Maldives | 6 | 2020 |
| 91 | Namibia | 6 | 2020 |
| 92 | Korea, Rep. | 5.9 | 2020 |
| 93 | Mozambique | 5.6 | 2020 |
| 94 | Cabo Verde | 5.4 | 2020 |
| 95 | Lesotho | 5.4 | 2020 |
| 96 | Singapore | 5 | 2020 |
| 97 | Bolivia | 4.8 | 2020 |
| 98 | Colombia | 4.6 | 2020 |
| 99 | Costa Rica | 4.6 | 2020 |
| 100 | Bahrain | 4.5 | 2020 |
| 101 | Paraguay | 4.4 | 2020 |
| 102 | Ecuador | 4.2 | 2020 |
| 103 | Malawi | 4.1 | 2020 |
| 104 | Jamaica | 3.8 | 2020 |
| 105 | Indonesia | 3.7 | 2020 |
| 106 | Uganda | 3.7 | 2020 |
| 107 | Zambia | 3.7 | 2020 |
| 108 | Tanzania | 3.4 | 2020 |
| 109 | Haiti | 3.1 | 2020 |
| 110 | Iran, Islamic Rep. | 3.1 | 2020 |
| 111 | Mauritius | 3 | 2020 |
| 112 | Peru | 3 | 2020 |
| 113 | Congo, Dem. Rep. | 2.9 | 2020 |
| 114 | Thailand | 2.9 | 2020 |
| 115 | Kyrgyz Republic | 2.8 | 2020 |
| 116 | Chad | 2.7 | 2020 |
| 117 | Kenya | 2.7 | 2020 |
| 118 | Sri Lanka | 2.6 | 2020 |
| 119 | Vanuatu | 2.6 | 2020 |
| 120 | Bahamas, The | 2.4 | 2020 |
| 121 | Guyana | 2.4 | 2020 |
| 122 | Brunei Darussalam | 2.3 | 2020 |
| 123 | Kuwait | 2.2 | 2020 |
| 124 | Panama | 2.2 | 2020 |
| 125 | Viet Nam | 2.2 | 2020 |
| 126 | Congo, Rep. | 2.1 | 2020 |
| 127 | Mauritania | 2.1 | 2020 |
| 128 | Liberia | 2 | 2020 |
| 129 | Saudi Arabia | 2 | 2020 |
| 130 | Tunisia | 2 | 2020 |
| 131 | Barbados | 1.9 | 2020 |
| 132 | Benin | 1.9 | 2020 |
| 133 | Qatar | 1.9 | 2020 |
| 134 | Belize | 1.8 | 2020 |
| 135 | Eswatini | 1.8 | 2020 |
| 136 | Iraq | 1.8 | 2020 |
| 137 | China | 1.7 | 2020 |
| 138 | El Salvador | 1.7 | 2020 |
| 139 | Guatemala | 1.6 | 2020 |
| 140 | Armenia | 1.5 | 2020 |
| 141 | Zimbabwe | 1.5 | 2020 |
| 142 | Cameroon | 1.4 | 2020 |
| 143 | Ethiopia | 1.3 | 2020 |
| 144 | Sao Tome and Principe | 1.3 | 2020 |
| 145 | Togo | 1.2 | 2020 |
| 146 | Malaysia | 1.1 | 2020 |
| 147 | Niger | 1.1 | 2020 |
| 148 | Uzbekistan | 1.1 | 2020 |
| 149 | Mali | 1 | 2020 |
| 150 | Cote d'Ivoire | 0.9 | 2020 |
| 151 | Guinea-Bissau | 0.9 | 2020 |
| 152 | Gambia, The | 0.8 | 2020 |
| 153 | Morocco | 0.8 | 2020 |
| 154 | Algeria | 0.7 | 2020 |
| 155 | Senegal | 0.7 | 2020 |
| 156 | Nigeria | 0.5 | 2020 |
| 157 | Egypt, Arab Rep. | 0.4 | 2020 |
| 158 | Oman | 0.4 | 2020 |
| 159 | Turkmenistan | 0.4 | 2020 |
| 160 | Ghana | 0.3 | 2020 |
| 161 | Eritrea | 0.2 | 2020 |
| 162 | Azerbaijan | 0.1 | 2020 |
| 163 | Korea, Dem. People's Rep. | 0 | 2020 |