| Rank | Country | Value | Year |
|---|---|---|---|
| 1 | Bermuda | 23.84 | 2021 |
| 2 | Cayman Islands | 20.39 | 2021 |
| 3 | Belize | 17.79 | 2021 |
| 4 | Gambia, The | 17.69 | 2021 |
| 5 | Solomon Islands | 14.31 | 2021 |
| 6 | Sierra Leone | 14.22 | 2021 |
| 7 | Nauru | 14.07 | 2021 |
| 8 | Venezuela, RB | 13.61 | 2021 |
| 9 | Antigua and Barbuda | 13.07 | 2021 |
| 10 | Ethiopia | 12.66 | 2021 |
| 11 | Guinea | 12.26 | 2021 |
| 12 | Barbados | 12.24 | 2021 |
| 13 | Nigeria | 12.2 | 2021 |
| 14 | Nepal | 11.99 | 2021 |
| 15 | Rwanda | 11.97 | 2021 |
| 16 | Guinea-Bissau | 11.82 | 2021 |
| 17 | Zimbabwe | 11.37 | 2021 |
| 18 | Angola | 11.33 | 2021 |
| 19 | Vanuatu | 11.08 | 2021 |
| 20 | Bangladesh | 10.95 | 2021 |
| 21 | Benin | 10.89 | 2021 |
| 22 | Togo | 10.73 | 2021 |
| 23 | Maldives | 10.55 | 2021 |
| 24 | Ghana | 10.51 | 2021 |
| 25 | Algeria | 10.29 | 2021 |
| 26 | Cabo Verde | 9.96 | 2021 |
| 27 | Aruba | 9.66 | 2021 |
| 28 | Palau | 9.49 | 2021 |
| 29 | Kenya | 9.3 | 2021 |
| 30 | St. Vincent and the Grenadines | 9.06 | 2021 |
| 31 | Pakistan | 9.03 | 2021 |
| 32 | Cuba | 8.91 | 2021 |
| 33 | Senegal | 8.88 | 2021 |
| 34 | Trinidad and Tobago | 8.87 | 2021 |
| 35 | Tanzania | 8.67 | 2021 |
| 36 | Uganda | 8.67 | 2021 |
| 37 | Jamaica | 8.61 | 2021 |
| 38 | Burundi | 8.53 | 2021 |
| 39 | Niger | 8.46 | 2021 |
| 40 | Suriname | 8.43 | 2021 |
| 41 | Fiji | 8.35 | 2021 |
| 42 | Mauritania | 8.32 | 2021 |
| 43 | Mali | 7.88 | 2021 |
| 44 | Brazil | 7.76 | 2021 |
| 45 | Cote d'Ivoire | 7.63 | 2021 |
| 46 | Madagascar | 7.51 | 2021 |
| 47 | Burkina Faso | 7.3 | 2021 |
| 48 | Liberia | 6.64 | 2021 |
| 49 | Tonga | 6.59 | 2021 |
| 50 | Argentina | 6.51 | 2021 |
| 51 | Panama | 6.43 | 2021 |
| 52 | Azerbaijan | 6.01 | 2021 |
| 53 | Malawi | 5.95 | 2021 |
| 54 | India | 5.87 | 2021 |
| 55 | French Polynesia | 5.75 | 2021 |
| 56 | Cambodia | 5.37 | 2021 |
| 57 | Mongolia | 5.28 | 2021 |
| 58 | Uruguay | 5.25 | 2021 |
| 59 | Bolivia | 5.12 | 2021 |
| 60 | Korea, Rep. | 4.85 | 2021 |
| 61 | Zambia | 4.81 | 2021 |
| 62 | Guyana | 4.73 | 2021 |
| 63 | Ecuador | 4.63 | 2021 |
| 64 | Paraguay | 4.49 | 2021 |
| 65 | South Africa | 4.46 | 2021 |
| 66 | Sri Lanka | 4.36 | 2021 |
| 67 | Comoros | 4.34 | 2021 |
| 68 | Morocco | 4.23 | 2021 |
| 69 | Mozambique | 4.19 | 2021 |
| 70 | Russian Federation | 4.17 | 2021 |
| 71 | Libya | 4.03 | 2021 |
| 72 | Dominican Republic | 3.8 | 2021 |
| 73 | Malaysia | 3.62 | 2021 |
| 74 | Armenia | 3.61 | 2021 |
| 75 | Papua New Guinea | 3.58 | 2021 |
| 76 | Qatar | 3.53 | 2021 |
| 77 | Lesotho | 3.35 | 2021 |
| 78 | Bhutan | 3.33 | 2021 |
| 79 | Turkiye | 3.22 | 2021 |
| 80 | Montenegro | 3.19 | 2021 |
| 81 | Thailand | 3.15 | 2021 |
| 82 | Kyrgyz Republic | 3.01 | 2021 |
| 83 | Norway | 3 | 2021 |
| 84 | Israel | 2.88 | 2021 |
| 85 | Honduras | 2.85 | 2021 |
| 86 | Kuwait | 2.85 | 2021 |
| 87 | Bosnia and Herzegovina | 2.8 | 2021 |
| 88 | United Arab Emirates | 2.63 | 2021 |
| 89 | Colombia | 2.58 | 2021 |
| 90 | Uzbekistan | 2.56 | 2021 |
| 91 | Timor-Leste | 2.53 | 2021 |
| 92 | North Macedonia | 2.38 | 2021 |
| 93 | Canada | 2.35 | 2021 |
| 94 | China | 2.31 | 2021 |
| 95 | Tajikistan | 2.31 | 2021 |
| 96 | Belarus | 2.27 | 2021 |
| 97 | Kazakhstan | 2.17 | 2021 |
| 98 | Eswatini | 2.14 | 2021 |
| 99 | Bahrain | 2.09 | 2021 |
| 100 | Oman | 2 | 2021 |
| 101 | Nicaragua | 1.96 | 2021 |
| 102 | El Salvador | 1.88 | 2021 |
| 103 | Japan | 1.84 | 2021 |
| 104 | Indonesia | 1.83 | 2021 |
| 105 | Philippines | 1.73 | 2021 |
| 106 | Guatemala | 1.72 | 2021 |
| 107 | Serbia | 1.72 | 2021 |
| 108 | Ukraine | 1.71 | 2021 |
| 109 | Iceland | 1.51 | 2021 |
| 110 | United States | 1.47 | 2021 |
| 111 | Costa Rica | 1.43 | 2021 |
| 112 | Switzerland | 1.4 | 2021 |
| 113 | Austria | 1.39 | 2021 |
| 114 | Belgium | 1.39 | 2021 |
| 115 | Bulgaria | 1.39 | 2021 |
| 116 | Croatia | 1.39 | 2021 |
| 117 | Cyprus | 1.39 | 2021 |
| 118 | Czechia | 1.39 | 2021 |
| 119 | Denmark | 1.39 | 2021 |
| 120 | Estonia | 1.39 | 2021 |
| 121 | Finland | 1.39 | 2021 |
| 122 | France | 1.39 | 2021 |
| 123 | Germany | 1.39 | 2021 |
| 124 | Greece | 1.39 | 2021 |
| 125 | Hungary | 1.39 | 2021 |
| 126 | Ireland | 1.39 | 2021 |
| 127 | Italy | 1.39 | 2021 |
| 128 | Latvia | 1.39 | 2021 |
| 129 | Lithuania | 1.39 | 2021 |
| 130 | Luxembourg | 1.39 | 2021 |
| 131 | Malta | 1.39 | 2021 |
| 132 | Netherlands | 1.39 | 2021 |
| 133 | Poland | 1.39 | 2021 |
| 134 | Portugal | 1.39 | 2021 |
| 135 | Romania | 1.39 | 2021 |
| 136 | Slovak Republic | 1.39 | 2021 |
| 137 | Slovenia | 1.39 | 2021 |
| 138 | Spain | 1.39 | 2021 |
| 139 | Sweden | 1.39 | 2021 |
| 140 | Namibia | 1.32 | 2021 |
| 141 | Mauritius | 1.27 | 2021 |
| 142 | Moldova | 1.2 | 2021 |
| 143 | Viet Nam | 1.17 | 2021 |
| 144 | Albania | 1.13 | 2021 |
| 145 | Lao PDR | 1.12 | 2021 |
| 146 | Seychelles | 1.07 | 2021 |
| 147 | Myanmar | 1.04 | 2021 |
| 148 | Botswana | 0.95 | 2021 |
| 149 | New Zealand | 0.86 | 2021 |
| 150 | Australia | 0.81 | 2021 |
| 151 | United Kingdom | 0.72 | 2021 |
| 152 | Peru | 0.65 | 2021 |
| 153 | Chile | 0.43 | 2021 |
| 154 | Georgia | 0.34 | 2021 |
| 155 | Brunei Darussalam | 0.02 | 2021 |
| 156 | Hong Kong SAR, China | 0 | 2021 |
| 157 | Macao SAR, China | 0 | 2021 |
| 158 | Singapore | 0 | 2021 |
| 159 | Sudan | 0 | 2021 |