| Rank | Country | Value | Year |
|---|---|---|---|
| 1 | Cayman Islands | 22.79 | 2021 |
| 2 | Bermuda | 22.24 | 2021 |
| 3 | Ethiopia | 18.49 | 2021 |
| 4 | Zimbabwe | 18.44 | 2021 |
| 5 | Nauru | 16.27 | 2021 |
| 6 | Uganda | 14.66 | 2021 |
| 7 | Kenya | 14.12 | 2021 |
| 8 | Liberia | 14.09 | 2021 |
| 9 | Gambia, The | 14.02 | 2021 |
| 10 | Sierra Leone | 13.74 | 2021 |
| 11 | Cabo Verde | 13.59 | 2021 |
| 12 | Guinea-Bissau | 13.23 | 2021 |
| 13 | Brazil | 13.2 | 2021 |
| 14 | Guinea | 13.14 | 2021 |
| 15 | Nepal | 13.1 | 2021 |
| 16 | Venezuela, RB | 13.05 | 2021 |
| 17 | Senegal | 12.88 | 2021 |
| 18 | Ghana | 12.84 | 2021 |
| 19 | Algeria | 12.83 | 2021 |
| 20 | Nigeria | 12.7 | 2021 |
| 21 | Bangladesh | 12.57 | 2021 |
| 22 | Mauritania | 12.53 | 2021 |
| 23 | Comoros | 12.49 | 2021 |
| 24 | Antigua and Barbuda | 12.39 | 2021 |
| 25 | Cote d'Ivoire | 12.13 | 2021 |
| 26 | Angola | 12.03 | 2021 |
| 27 | Tanzania | 12.03 | 2021 |
| 28 | Argentina | 11.9 | 2021 |
| 29 | Rwanda | 11.9 | 2021 |
| 30 | Belize | 11.87 | 2021 |
| 31 | Zambia | 11.66 | 2021 |
| 32 | Pakistan | 11.65 | 2021 |
| 33 | Mali | 11.43 | 2021 |
| 34 | Burkina Faso | 11.33 | 2021 |
| 35 | Togo | 11.33 | 2021 |
| 36 | Benin | 11.32 | 2021 |
| 37 | Burundi | 11.29 | 2021 |
| 38 | Vanuatu | 10.84 | 2021 |
| 39 | Niger | 10.48 | 2021 |
| 40 | Cuba | 10.44 | 2021 |
| 41 | Maldives | 10.43 | 2021 |
| 42 | Trinidad and Tobago | 10.42 | 2021 |
| 43 | Suriname | 10.15 | 2021 |
| 44 | Solomon Islands | 10.11 | 2021 |
| 45 | Aruba | 9.98 | 2021 |
| 46 | Uruguay | 9.88 | 2021 |
| 47 | India | 9.86 | 2021 |
| 48 | Bolivia | 9.83 | 2021 |
| 49 | St. Vincent and the Grenadines | 9.78 | 2021 |
| 50 | Barbados | 9.53 | 2021 |
| 51 | Tonga | 9.53 | 2021 |
| 52 | Malawi | 9.48 | 2021 |
| 53 | Guyana | 9.28 | 2021 |
| 54 | Azerbaijan | 9.26 | 2021 |
| 55 | Jamaica | 8.95 | 2021 |
| 56 | Mozambique | 8.84 | 2021 |
| 57 | Madagascar | 8.53 | 2021 |
| 58 | Thailand | 8.48 | 2021 |
| 59 | Paraguay | 8.11 | 2021 |
| 60 | Fiji | 7.84 | 2021 |
| 61 | Botswana | 7.79 | 2021 |
| 62 | Cambodia | 7.72 | 2021 |
| 63 | Ecuador | 7.7 | 2021 |
| 64 | French Polynesia | 7.62 | 2021 |
| 65 | Eswatini | 7.18 | 2021 |
| 66 | South Africa | 7.16 | 2021 |
| 67 | Palau | 6.8 | 2021 |
| 68 | Namibia | 6.73 | 2021 |
| 69 | Uzbekistan | 6.66 | 2021 |
| 70 | Indonesia | 6.02 | 2021 |
| 71 | Lesotho | 6.01 | 2021 |
| 72 | Panama | 5.99 | 2021 |
| 73 | Tajikistan | 5.87 | 2021 |
| 74 | Morocco | 5.73 | 2021 |
| 75 | Sri Lanka | 5.73 | 2021 |
| 76 | Armenia | 5.7 | 2021 |
| 77 | Belarus | 5.65 | 2021 |
| 78 | Malaysia | 5.61 | 2021 |
| 79 | Dominican Republic | 5.53 | 2021 |
| 80 | Russian Federation | 5.51 | 2021 |
| 81 | China | 5.31 | 2021 |
| 82 | Mongolia | 5.04 | 2021 |
| 83 | Korea, Rep. | 5 | 2021 |
| 84 | Kazakhstan | 4.48 | 2021 |
| 85 | Libya | 4.46 | 2021 |
| 86 | Turkiye | 4.44 | 2021 |
| 87 | Kyrgyz Republic | 4.39 | 2021 |
| 88 | Papua New Guinea | 4.34 | 2021 |
| 89 | Viet Nam | 4.22 | 2021 |
| 90 | Switzerland | 4.13 | 2021 |
| 91 | United Arab Emirates | 4.11 | 2021 |
| 92 | Bhutan | 4.06 | 2021 |
| 93 | Philippines | 4.01 | 2021 |
| 94 | Qatar | 3.95 | 2021 |
| 95 | Kuwait | 3.86 | 2021 |
| 96 | Bahrain | 3.6 | 2021 |
| 97 | Norway | 3.49 | 2021 |
| 98 | North Macedonia | 3.46 | 2021 |
| 99 | Honduras | 3.36 | 2021 |
| 100 | El Salvador | 3.28 | 2021 |
| 101 | Israel | 3.23 | 2021 |
| 102 | Colombia | 3.19 | 2021 |
| 103 | Bosnia and Herzegovina | 3.16 | 2021 |
| 104 | Oman | 3.12 | 2021 |
| 105 | Serbia | 3.08 | 2021 |
| 106 | Myanmar | 3.07 | 2021 |
| 107 | Nicaragua | 3.04 | 2021 |
| 108 | Guatemala | 3 | 2021 |
| 109 | United States | 2.79 | 2021 |
| 110 | Costa Rica | 2.77 | 2021 |
| 111 | Timor-Leste | 2.52 | 2021 |
| 112 | Lao PDR | 2.49 | 2021 |
| 113 | Moldova | 2.34 | 2021 |
| 114 | Austria | 2.24 | 2021 |
| 115 | Belgium | 2.24 | 2021 |
| 116 | Bulgaria | 2.24 | 2021 |
| 117 | Croatia | 2.24 | 2021 |
| 118 | Cyprus | 2.24 | 2021 |
| 119 | Czechia | 2.24 | 2021 |
| 120 | Denmark | 2.24 | 2021 |
| 121 | Estonia | 2.24 | 2021 |
| 122 | Finland | 2.24 | 2021 |
| 123 | France | 2.24 | 2021 |
| 124 | Germany | 2.24 | 2021 |
| 125 | Greece | 2.24 | 2021 |
| 126 | Hungary | 2.24 | 2021 |
| 127 | Ireland | 2.24 | 2021 |
| 128 | Italy | 2.24 | 2021 |
| 129 | Latvia | 2.24 | 2021 |
| 130 | Lithuania | 2.24 | 2021 |
| 131 | Luxembourg | 2.24 | 2021 |
| 132 | Malta | 2.24 | 2021 |
| 133 | Netherlands | 2.24 | 2021 |
| 134 | Poland | 2.24 | 2021 |
| 135 | Portugal | 2.24 | 2021 |
| 136 | Romania | 2.24 | 2021 |
| 137 | Slovak Republic | 2.24 | 2021 |
| 138 | Slovenia | 2.24 | 2021 |
| 139 | Spain | 2.24 | 2021 |
| 140 | Sweden | 2.24 | 2021 |
| 141 | Japan | 2.18 | 2021 |
| 142 | Ukraine | 2.16 | 2021 |
| 143 | Canada | 2.06 | 2021 |
| 144 | Montenegro | 1.97 | 2021 |
| 145 | Australia | 1.93 | 2021 |
| 146 | New Zealand | 1.91 | 2021 |
| 147 | Seychelles | 1.75 | 2021 |
| 148 | Albania | 1.61 | 2021 |
| 149 | Iceland | 1.53 | 2021 |
| 150 | Mauritius | 1.16 | 2021 |
| 151 | Peru | 1.08 | 2021 |
| 152 | Chile | 1.07 | 2021 |
| 153 | United Kingdom | 1 | 2021 |
| 154 | Georgia | 0.43 | 2021 |
| 155 | Brunei Darussalam | 0.12 | 2021 |
| 156 | Singapore | 0.08 | 2021 |
| 157 | Hong Kong SAR, China | 0 | 2021 |
| 158 | Macao SAR, China | 0 | 2021 |
| 159 | Sudan | 0 | 2021 |