| Rank | Country | Value | Year |
|---|---|---|---|
| 1 | Bermuda | 20.81 | 2021 |
| 2 | Cayman Islands | 19.66 | 2021 |
| 3 | Gambia, The | 17.88 | 2021 |
| 4 | Venezuela, RB | 15.37 | 2021 |
| 5 | Bangladesh | 13.34 | 2021 |
| 6 | Nauru | 13.27 | 2021 |
| 7 | Antigua and Barbuda | 13.07 | 2021 |
| 8 | Ethiopia | 12.86 | 2021 |
| 9 | Sierra Leone | 12.48 | 2021 |
| 10 | Zimbabwe | 12.38 | 2021 |
| 11 | Nigeria | 12.34 | 2021 |
| 12 | Nepal | 12.22 | 2021 |
| 13 | Maldives | 11.87 | 2021 |
| 14 | Pakistan | 11.65 | 2021 |
| 15 | Guinea | 11.29 | 2021 |
| 16 | Aruba | 10.86 | 2021 |
| 17 | Algeria | 10.42 | 2021 |
| 18 | Togo | 10.39 | 2021 |
| 19 | Belize | 10.37 | 2021 |
| 20 | Cuba | 10.34 | 2021 |
| 21 | Guinea-Bissau | 10.34 | 2021 |
| 22 | Mauritania | 10.07 | 2021 |
| 23 | Ghana | 9.88 | 2021 |
| 24 | Solomon Islands | 9.75 | 2021 |
| 25 | Senegal | 9.47 | 2021 |
| 26 | St. Vincent and the Grenadines | 9.32 | 2021 |
| 27 | Vanuatu | 9.32 | 2021 |
| 28 | Jamaica | 9.13 | 2021 |
| 29 | Brazil | 9.11 | 2021 |
| 30 | Cote d'Ivoire | 8.87 | 2021 |
| 31 | Barbados | 8.62 | 2021 |
| 32 | Benin | 8.55 | 2021 |
| 33 | Cabo Verde | 8.4 | 2021 |
| 34 | Tonga | 8.25 | 2021 |
| 35 | Angola | 8.19 | 2021 |
| 36 | Madagascar | 8.04 | 2021 |
| 37 | Burkina Faso | 7.96 | 2021 |
| 38 | Kenya | 7.75 | 2021 |
| 39 | Argentina | 7.72 | 2021 |
| 40 | Niger | 7.64 | 2021 |
| 41 | Suriname | 7.46 | 2021 |
| 42 | Mali | 7.32 | 2021 |
| 43 | Uganda | 7.24 | 2021 |
| 44 | Rwanda | 7.07 | 2021 |
| 45 | India | 6.79 | 2021 |
| 46 | French Polynesia | 6.76 | 2021 |
| 47 | Uruguay | 6.73 | 2021 |
| 48 | Tanzania | 6.38 | 2021 |
| 49 | Cambodia | 6.32 | 2021 |
| 50 | Burundi | 6.31 | 2021 |
| 51 | Azerbaijan | 6.28 | 2021 |
| 52 | Liberia | 6.09 | 2021 |
| 53 | Trinidad and Tobago | 6.03 | 2021 |
| 54 | Ecuador | 5.94 | 2021 |
| 55 | Bolivia | 5.44 | 2021 |
| 56 | Zambia | 5.34 | 2021 |
| 57 | Malawi | 5.12 | 2021 |
| 58 | South Africa | 5.06 | 2021 |
| 59 | Fiji | 4.86 | 2021 |
| 60 | Paraguay | 4.8 | 2021 |
| 61 | Comoros | 4.76 | 2021 |
| 62 | Mongolia | 4.69 | 2021 |
| 63 | Lesotho | 4.46 | 2021 |
| 64 | Panama | 4.4 | 2021 |
| 65 | Dominican Republic | 4.38 | 2021 |
| 66 | Mozambique | 4.38 | 2021 |
| 67 | Libya | 4.26 | 2021 |
| 68 | Palau | 4.2 | 2021 |
| 69 | Russian Federation | 4.16 | 2021 |
| 70 | Armenia | 4.02 | 2021 |
| 71 | Guyana | 3.96 | 2021 |
| 72 | Malaysia | 3.88 | 2021 |
| 73 | Tajikistan | 3.79 | 2021 |
| 74 | Qatar | 3.76 | 2021 |
| 75 | Kyrgyz Republic | 3.45 | 2021 |
| 76 | Kuwait | 3.19 | 2021 |
| 77 | Bhutan | 3.16 | 2021 |
| 78 | Morocco | 3.07 | 2021 |
| 79 | Uzbekistan | 2.93 | 2021 |
| 80 | United Arab Emirates | 2.92 | 2021 |
| 81 | Eswatini | 2.88 | 2021 |
| 82 | Bahrain | 2.85 | 2021 |
| 83 | Honduras | 2.68 | 2021 |
| 84 | Colombia | 2.65 | 2021 |
| 85 | China | 2.57 | 2021 |
| 86 | Timor-Leste | 2.52 | 2021 |
| 87 | Kazakhstan | 2.32 | 2021 |
| 88 | Papua New Guinea | 2.24 | 2021 |
| 89 | Belarus | 2.23 | 2021 |
| 90 | Thailand | 2.23 | 2021 |
| 91 | Bosnia and Herzegovina | 2.14 | 2021 |
| 92 | Nicaragua | 2.09 | 2021 |
| 93 | El Salvador | 2.07 | 2021 |
| 94 | Oman | 2.04 | 2021 |
| 95 | Sri Lanka | 2 | 2021 |
| 96 | Israel | 1.95 | 2021 |
| 97 | Ukraine | 1.92 | 2021 |
| 98 | Turkiye | 1.86 | 2021 |
| 99 | Guatemala | 1.78 | 2021 |
| 100 | Canada | 1.77 | 2021 |
| 101 | Serbia | 1.72 | 2021 |
| 102 | Namibia | 1.71 | 2021 |
| 103 | Indonesia | 1.68 | 2021 |
| 104 | United States | 1.57 | 2021 |
| 105 | Austria | 1.43 | 2021 |
| 106 | Belgium | 1.43 | 2021 |
| 107 | Bulgaria | 1.43 | 2021 |
| 108 | Croatia | 1.43 | 2021 |
| 109 | Cyprus | 1.43 | 2021 |
| 110 | Czechia | 1.43 | 2021 |
| 111 | Denmark | 1.43 | 2021 |
| 112 | Estonia | 1.43 | 2021 |
| 113 | Finland | 1.43 | 2021 |
| 114 | France | 1.43 | 2021 |
| 115 | Germany | 1.43 | 2021 |
| 116 | Greece | 1.43 | 2021 |
| 117 | Hungary | 1.43 | 2021 |
| 118 | Ireland | 1.43 | 2021 |
| 119 | Italy | 1.43 | 2021 |
| 120 | Latvia | 1.43 | 2021 |
| 121 | Lithuania | 1.43 | 2021 |
| 122 | Luxembourg | 1.43 | 2021 |
| 123 | Malta | 1.43 | 2021 |
| 124 | Netherlands | 1.43 | 2021 |
| 125 | Poland | 1.43 | 2021 |
| 126 | Portugal | 1.43 | 2021 |
| 127 | Romania | 1.43 | 2021 |
| 128 | Slovak Republic | 1.43 | 2021 |
| 129 | Slovenia | 1.43 | 2021 |
| 130 | Spain | 1.43 | 2021 |
| 131 | Sweden | 1.43 | 2021 |
| 132 | North Macedonia | 1.38 | 2021 |
| 133 | Lao PDR | 1.23 | 2021 |
| 134 | Montenegro | 1.22 | 2021 |
| 135 | Korea, Rep. | 1.15 | 2021 |
| 136 | Moldova | 1.07 | 2021 |
| 137 | Japan | 1.03 | 2021 |
| 138 | Myanmar | 0.96 | 2021 |
| 139 | New Zealand | 0.92 | 2021 |
| 140 | Costa Rica | 0.89 | 2021 |
| 141 | Viet Nam | 0.88 | 2021 |
| 142 | Philippines | 0.87 | 2021 |
| 143 | Mauritius | 0.86 | 2021 |
| 144 | Australia | 0.85 | 2021 |
| 145 | Peru | 0.81 | 2021 |
| 146 | Albania | 0.78 | 2021 |
| 147 | Botswana | 0.7 | 2021 |
| 148 | United Kingdom | 0.69 | 2021 |
| 149 | Chile | 0.46 | 2021 |
| 150 | Norway | 0.26 | 2021 |
| 151 | Georgia | 0.25 | 2021 |
| 152 | Switzerland | 0.19 | 2021 |
| 153 | Seychelles | 0.14 | 2021 |
| 154 | Brunei Darussalam | 0.03 | 2021 |
| 155 | Hong Kong SAR, China | 0 | 2021 |
| 156 | Iceland | 0 | 2021 |
| 157 | Macao SAR, China | 0 | 2021 |
| 158 | Singapore | 0 | 2021 |
| 159 | Sudan | 0 | 2021 |