| Rank | Country | Value | Year |
|---|---|---|---|
| 1 | Sudan | 25.17 | 2021 |
| 2 | Bermuda | 23.84 | 2021 |
| 3 | Cayman Islands | 20.39 | 2021 |
| 4 | Belize | 19.66 | 2021 |
| 5 | Gambia, The | 18.93 | 2021 |
| 6 | Venezuela, RB | 18.92 | 2021 |
| 7 | Rwanda | 18.62 | 2021 |
| 8 | Burundi | 16.65 | 2021 |
| 9 | Uganda | 15.77 | 2021 |
| 10 | Barbados | 15.62 | 2021 |
| 11 | Solomon Islands | 14.78 | 2021 |
| 12 | Antigua and Barbuda | 14.72 | 2021 |
| 13 | Guinea-Bissau | 14.72 | 2021 |
| 14 | Sierra Leone | 14.39 | 2021 |
| 15 | Nauru | 14.07 | 2021 |
| 16 | Algeria | 13.75 | 2021 |
| 17 | Morocco | 13.72 | 2021 |
| 18 | St. Vincent and the Grenadines | 13.1 | 2021 |
| 19 | Nepal | 12.92 | 2021 |
| 20 | Vanuatu | 12.84 | 2021 |
| 21 | Guinea | 12.8 | 2021 |
| 22 | Ethiopia | 12.74 | 2021 |
| 23 | Nigeria | 12.26 | 2021 |
| 24 | Kenya | 12.18 | 2021 |
| 25 | Togo | 12.09 | 2021 |
| 26 | Benin | 12.04 | 2021 |
| 27 | Lesotho | 11.76 | 2021 |
| 28 | Bangladesh | 11.44 | 2021 |
| 29 | Zimbabwe | 11.37 | 2021 |
| 30 | Angola | 11.33 | 2021 |
| 31 | Maldives | 11.07 | 2021 |
| 32 | Ghana | 11.02 | 2021 |
| 33 | Niger | 11.01 | 2021 |
| 34 | Bhutan | 10.95 | 2021 |
| 35 | Mali | 10.87 | 2021 |
| 36 | Cuba | 10.67 | 2021 |
| 37 | Tanzania | 10.67 | 2021 |
| 38 | Argentina | 10.4 | 2021 |
| 39 | Suriname | 10.26 | 2021 |
| 40 | Bolivia | 10.19 | 2021 |
| 41 | Jamaica | 10.13 | 2021 |
| 42 | Cabo Verde | 10.05 | 2021 |
| 43 | Malawi | 10.04 | 2021 |
| 44 | Uruguay | 9.97 | 2021 |
| 45 | Pakistan | 9.9 | 2021 |
| 46 | Burkina Faso | 9.67 | 2021 |
| 47 | Aruba | 9.66 | 2021 |
| 48 | Brazil | 9.61 | 2021 |
| 49 | Madagascar | 9.6 | 2021 |
| 50 | Palau | 9.49 | 2021 |
| 51 | Eswatini | 9.48 | 2021 |
| 52 | Senegal | 9.46 | 2021 |
| 53 | Zambia | 9.39 | 2021 |
| 54 | Korea, Rep. | 8.9 | 2021 |
| 55 | Trinidad and Tobago | 8.87 | 2021 |
| 56 | Lao PDR | 8.74 | 2021 |
| 57 | Cambodia | 8.66 | 2021 |
| 58 | Fiji | 8.46 | 2021 |
| 59 | Bosnia and Herzegovina | 8.44 | 2021 |
| 60 | French Polynesia | 8.37 | 2021 |
| 61 | Mauritania | 8.32 | 2021 |
| 62 | Azerbaijan | 8.26 | 2021 |
| 63 | Cote d'Ivoire | 8.15 | 2021 |
| 64 | Honduras | 8.04 | 2021 |
| 65 | Dominican Republic | 8.03 | 2021 |
| 66 | Paraguay | 7.91 | 2021 |
| 67 | El Salvador | 7.88 | 2021 |
| 68 | Thailand | 7.61 | 2021 |
| 69 | Ecuador | 7.33 | 2021 |
| 70 | India | 7.31 | 2021 |
| 71 | Mozambique | 7.23 | 2021 |
| 72 | Kyrgyz Republic | 7.09 | 2021 |
| 73 | Nicaragua | 7.08 | 2021 |
| 74 | Colombia | 6.8 | 2021 |
| 75 | Serbia | 6.78 | 2021 |
| 76 | Tonga | 6.68 | 2021 |
| 77 | Liberia | 6.64 | 2021 |
| 78 | South Africa | 6.62 | 2021 |
| 79 | Namibia | 6.54 | 2021 |
| 80 | Panama | 6.43 | 2021 |
| 81 | Tajikistan | 6.36 | 2021 |
| 82 | Armenia | 6.32 | 2021 |
| 83 | Guyana | 6.3 | 2021 |
| 84 | Botswana | 6.09 | 2021 |
| 85 | Chile | 5.99 | 2021 |
| 86 | Montenegro | 5.98 | 2021 |
| 87 | Myanmar | 5.93 | 2021 |
| 88 | Libya | 5.8 | 2021 |
| 89 | Philippines | 5.75 | 2021 |
| 90 | Indonesia | 5.65 | 2021 |
| 91 | Mongolia | 5.52 | 2021 |
| 92 | Belarus | 5.48 | 2021 |
| 93 | Costa Rica | 5.41 | 2021 |
| 94 | North Macedonia | 5.4 | 2021 |
| 95 | Viet Nam | 5.28 | 2021 |
| 96 | Guatemala | 5.27 | 2021 |
| 97 | Russian Federation | 5.11 | 2021 |
| 98 | Turkiye | 5.09 | 2021 |
| 99 | Moldova | 4.94 | 2021 |
| 100 | Kazakhstan | 4.89 | 2021 |
| 101 | Uzbekistan | 4.87 | 2021 |
| 102 | Sri Lanka | 4.68 | 2021 |
| 103 | Comoros | 4.56 | 2021 |
| 104 | Bahrain | 4.39 | 2021 |
| 105 | Oman | 4.3 | 2021 |
| 106 | Qatar | 3.95 | 2021 |
| 107 | Norway | 3.9 | 2021 |
| 108 | Kuwait | 3.75 | 2021 |
| 109 | Malaysia | 3.62 | 2021 |
| 110 | Papua New Guinea | 3.62 | 2021 |
| 111 | Seychelles | 3.54 | 2021 |
| 112 | Ukraine | 3.5 | 2021 |
| 113 | United Kingdom | 3.45 | 2021 |
| 114 | Iceland | 3.34 | 2021 |
| 115 | Albania | 3.32 | 2021 |
| 116 | Switzerland | 3.27 | 2021 |
| 117 | China | 3.08 | 2021 |
| 118 | Canada | 3.03 | 2021 |
| 119 | Georgia | 3 | 2021 |
| 120 | United Arab Emirates | 2.97 | 2021 |
| 121 | Israel | 2.9 | 2021 |
| 122 | Australia | 2.86 | 2021 |
| 123 | Austria | 2.85 | 2021 |
| 124 | Belgium | 2.85 | 2021 |
| 125 | Bulgaria | 2.85 | 2021 |
| 126 | Croatia | 2.85 | 2021 |
| 127 | Cyprus | 2.85 | 2021 |
| 128 | Czechia | 2.85 | 2021 |
| 129 | Denmark | 2.85 | 2021 |
| 130 | Estonia | 2.85 | 2021 |
| 131 | Finland | 2.85 | 2021 |
| 132 | France | 2.85 | 2021 |
| 133 | Germany | 2.85 | 2021 |
| 134 | Greece | 2.85 | 2021 |
| 135 | Hungary | 2.85 | 2021 |
| 136 | Ireland | 2.85 | 2021 |
| 137 | Italy | 2.85 | 2021 |
| 138 | Latvia | 2.85 | 2021 |
| 139 | Lithuania | 2.85 | 2021 |
| 140 | Luxembourg | 2.85 | 2021 |
| 141 | Malta | 2.85 | 2021 |
| 142 | Netherlands | 2.85 | 2021 |
| 143 | Poland | 2.85 | 2021 |
| 144 | Portugal | 2.85 | 2021 |
| 145 | Romania | 2.85 | 2021 |
| 146 | Slovak Republic | 2.85 | 2021 |
| 147 | Slovenia | 2.85 | 2021 |
| 148 | Spain | 2.85 | 2021 |
| 149 | Sweden | 2.85 | 2021 |
| 150 | Japan | 2.69 | 2021 |
| 151 | New Zealand | 2.67 | 2021 |
| 152 | United States | 2.57 | 2021 |
| 153 | Timor-Leste | 2.53 | 2021 |
| 154 | Peru | 2.11 | 2021 |
| 155 | Mauritius | 1.55 | 2021 |
| 156 | Singapore | 0.16 | 2021 |
| 157 | Brunei Darussalam | 0.1 | 2021 |
| 158 | Hong Kong SAR, China | 0 | 2021 |
| 159 | Macao SAR, China | 0 | 2021 |