| Rank | Country | Value | Year |
|---|---|---|---|
| 1 | Cayman Islands | 22.26 | 2021 |
| 2 | Bermuda | 19.95 | 2021 |
| 3 | Ethiopia | 18.4 | 2021 |
| 4 | Zimbabwe | 17.97 | 2021 |
| 5 | Brazil | 13.73 | 2021 |
| 6 | Kenya | 13.69 | 2021 |
| 7 | Uganda | 13.62 | 2021 |
| 8 | Venezuela, RB | 13.24 | 2021 |
| 9 | Comoros | 13.23 | 2021 |
| 10 | Gambia, The | 13.23 | 2021 |
| 11 | Cabo Verde | 13.11 | 2021 |
| 12 | Sierra Leone | 12.76 | 2021 |
| 13 | Liberia | 12.67 | 2021 |
| 14 | Algeria | 12.63 | 2021 |
| 15 | Guinea-Bissau | 12.57 | 2021 |
| 16 | Senegal | 12.52 | 2021 |
| 17 | Guinea | 12.38 | 2021 |
| 18 | Nigeria | 12.33 | 2021 |
| 19 | Ghana | 12.32 | 2021 |
| 20 | Argentina | 12.31 | 2021 |
| 21 | Nauru | 12.31 | 2021 |
| 22 | Bangladesh | 12.29 | 2021 |
| 23 | Nepal | 12.26 | 2021 |
| 24 | Mauritania | 12.03 | 2021 |
| 25 | Pakistan | 11.96 | 2021 |
| 26 | Cote d'Ivoire | 11.66 | 2021 |
| 27 | Antigua and Barbuda | 11.51 | 2021 |
| 28 | Zambia | 11.45 | 2021 |
| 29 | Tanzania | 11.41 | 2021 |
| 30 | Burkina Faso | 11.31 | 2021 |
| 31 | Mali | 11.11 | 2021 |
| 32 | Maldives | 10.92 | 2021 |
| 33 | Togo | 10.92 | 2021 |
| 34 | Aruba | 10.87 | 2021 |
| 35 | Rwanda | 10.72 | 2021 |
| 36 | Benin | 10.66 | 2021 |
| 37 | Burundi | 10.64 | 2021 |
| 38 | Angola | 10.62 | 2021 |
| 39 | Cuba | 10.29 | 2021 |
| 40 | Niger | 10.23 | 2021 |
| 41 | Uruguay | 10.15 | 2021 |
| 42 | Belize | 10.04 | 2021 |
| 43 | Bolivia | 9.97 | 2021 |
| 44 | Tonga | 9.93 | 2021 |
| 45 | Malawi | 9.2 | 2021 |
| 46 | Suriname | 9.17 | 2021 |
| 47 | Vanuatu | 9.13 | 2021 |
| 48 | Azerbaijan | 9 | 2021 |
| 49 | Solomon Islands | 8.92 | 2021 |
| 50 | India | 8.8 | 2021 |
| 51 | Mozambique | 8.56 | 2021 |
| 52 | Paraguay | 8.25 | 2021 |
| 53 | Guyana | 8.18 | 2021 |
| 54 | Jamaica | 8.11 | 2021 |
| 55 | Botswana | 8.09 | 2021 |
| 56 | French Polynesia | 8.08 | 2021 |
| 57 | Madagascar | 8.08 | 2021 |
| 58 | Trinidad and Tobago | 8.08 | 2021 |
| 59 | Barbados | 8.05 | 2021 |
| 60 | St. Vincent and the Grenadines | 8.04 | 2021 |
| 61 | Ecuador | 7.8 | 2021 |
| 62 | Thailand | 7.75 | 2021 |
| 63 | Cambodia | 7.64 | 2021 |
| 64 | Eswatini | 7.5 | 2021 |
| 65 | South Africa | 7.5 | 2021 |
| 66 | Namibia | 7.03 | 2021 |
| 67 | Lesotho | 6.34 | 2021 |
| 68 | Uzbekistan | 6.3 | 2021 |
| 69 | Fiji | 6.24 | 2021 |
| 70 | Indonesia | 6.05 | 2021 |
| 71 | Tajikistan | 5.79 | 2021 |
| 72 | Malaysia | 5.62 | 2021 |
| 73 | Belarus | 5.6 | 2021 |
| 74 | Armenia | 5.57 | 2021 |
| 75 | Morocco | 5.48 | 2021 |
| 76 | Russian Federation | 5.44 | 2021 |
| 77 | Panama | 5.3 | 2021 |
| 78 | Dominican Republic | 5.26 | 2021 |
| 79 | China | 5.13 | 2021 |
| 80 | Mongolia | 4.87 | 2021 |
| 81 | Kazakhstan | 4.47 | 2021 |
| 82 | Libya | 4.47 | 2021 |
| 83 | Kyrgyz Republic | 4.38 | 2021 |
| 84 | Sri Lanka | 4.36 | 2021 |
| 85 | Palau | 4.33 | 2021 |
| 86 | Qatar | 4.11 | 2021 |
| 87 | United Arab Emirates | 4 | 2021 |
| 88 | Viet Nam | 3.96 | 2021 |
| 89 | Kuwait | 3.95 | 2021 |
| 90 | Philippines | 3.87 | 2021 |
| 91 | Bhutan | 3.78 | 2021 |
| 92 | Bahrain | 3.77 | 2021 |
| 93 | Colombia | 3.17 | 2021 |
| 94 | El Salvador | 3.12 | 2021 |
| 95 | Honduras | 3.12 | 2021 |
| 96 | Bosnia and Herzegovina | 3.1 | 2021 |
| 97 | Oman | 2.99 | 2021 |
| 98 | Nicaragua | 2.92 | 2021 |
| 99 | Serbia | 2.92 | 2021 |
| 100 | Guatemala | 2.91 | 2021 |
| 101 | Myanmar | 2.89 | 2021 |
| 102 | Israel | 2.88 | 2021 |
| 103 | North Macedonia | 2.85 | 2021 |
| 104 | United States | 2.84 | 2021 |
| 105 | Costa Rica | 2.62 | 2021 |
| 106 | Papua New Guinea | 2.62 | 2021 |
| 107 | Timor-Leste | 2.53 | 2021 |
| 108 | Lao PDR | 2.47 | 2021 |
| 109 | Korea, Rep. | 2.14 | 2021 |
| 110 | Moldova | 2.06 | 2021 |
| 111 | Australia | 2.05 | 2021 |
| 112 | Ukraine | 2.03 | 2021 |
| 113 | New Zealand | 2.02 | 2021 |
| 114 | Turkiye | 1.83 | 2021 |
| 115 | Austria | 1.67 | 2021 |
| 116 | Belgium | 1.67 | 2021 |
| 117 | Bulgaria | 1.67 | 2021 |
| 118 | Croatia | 1.67 | 2021 |
| 119 | Cyprus | 1.67 | 2021 |
| 120 | Czechia | 1.67 | 2021 |
| 121 | Denmark | 1.67 | 2021 |
| 122 | Estonia | 1.67 | 2021 |
| 123 | Finland | 1.67 | 2021 |
| 124 | France | 1.67 | 2021 |
| 125 | Germany | 1.67 | 2021 |
| 126 | Greece | 1.67 | 2021 |
| 127 | Hungary | 1.67 | 2021 |
| 128 | Ireland | 1.67 | 2021 |
| 129 | Italy | 1.67 | 2021 |
| 130 | Latvia | 1.67 | 2021 |
| 131 | Lithuania | 1.67 | 2021 |
| 132 | Luxembourg | 1.67 | 2021 |
| 133 | Malta | 1.67 | 2021 |
| 134 | Netherlands | 1.67 | 2021 |
| 135 | Poland | 1.67 | 2021 |
| 136 | Portugal | 1.67 | 2021 |
| 137 | Romania | 1.67 | 2021 |
| 138 | Slovak Republic | 1.67 | 2021 |
| 139 | Slovenia | 1.67 | 2021 |
| 140 | Spain | 1.67 | 2021 |
| 141 | Sweden | 1.67 | 2021 |
| 142 | Canada | 1.65 | 2021 |
| 143 | Montenegro | 1.62 | 2021 |
| 144 | Albania | 1.39 | 2021 |
| 145 | Peru | 1.14 | 2021 |
| 146 | Mauritius | 1.13 | 2021 |
| 147 | Japan | 1.09 | 2021 |
| 148 | Chile | 1.05 | 2021 |
| 149 | Switzerland | 1.03 | 2021 |
| 150 | United Kingdom | 0.77 | 2021 |
| 151 | Seychelles | 0.7 | 2021 |
| 152 | Norway | 0.36 | 2021 |
| 153 | Georgia | 0.3 | 2021 |
| 154 | Brunei Darussalam | 0.13 | 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 |