| Rank | Country | Value | Year |
|---|---|---|---|
| 1 | Eswatini | 4.1 | 2022 |
| 2 | South Africa | 3.6 | 2022 |
| 3 | Lesotho | 3.3 | 2022 |
| 4 | Botswana | 2.8 | 2022 |
| 5 | Zimbabwe | 2.8 | 2022 |
| 6 | Mozambique | 2.7 | 2022 |
| 7 | Namibia | 2.5 | 2022 |
| 8 | Zambia | 1.9 | 2022 |
| 9 | Malawi | 1.5 | 2022 |
| 10 | Equatorial Guinea | 1.2 | 2022 |
| 11 | Kenya | 1.1 | 2022 |
| 12 | Uganda | 1 | 2022 |
| 13 | Central African Republic | 0.9 | 2022 |
| 14 | Tanzania | 0.9 | 2022 |
| 15 | Congo, Rep. | 0.7 | 2022 |
| 16 | Panama | 0.7 | 2022 |
| 17 | Belize | 0.6 | 2022 |
| 18 | Guinea-Bissau | 0.6 | 2022 |
| 19 | Rwanda | 0.6 | 2022 |
| 20 | Cameroon | 0.5 | 2022 |
| 21 | Cote d'Ivoire | 0.5 | 2022 |
| 22 | Gabon | 0.5 | 2022 |
| 23 | Jamaica | 0.5 | 2022 |
| 24 | Sierra Leone | 0.5 | 2022 |
| 25 | South Sudan | 0.5 | 2022 |
| 26 | Barbados | 0.4 | 2022 |
| 27 | Dominican Republic | 0.4 | 2022 |
| 28 | Haiti | 0.4 | 2022 |
| 29 | Thailand | 0.4 | 2022 |
| 30 | Togo | 0.4 | 2022 |
| 31 | Angola | 0.3 | 2022 |
| 32 | Bahamas, The | 0.3 | 2022 |
| 33 | Burundi | 0.3 | 2022 |
| 34 | Cambodia | 0.3 | 2022 |
| 35 | Chad | 0.3 | 2022 |
| 36 | Chile | 0.3 | 2022 |
| 37 | Costa Rica | 0.3 | 2022 |
| 38 | Cuba | 0.3 | 2022 |
| 39 | Ghana | 0.3 | 2022 |
| 40 | Guinea | 0.3 | 2022 |
| 41 | Liberia | 0.3 | 2022 |
| 42 | Mexico | 0.3 | 2022 |
| 43 | Myanmar | 0.3 | 2022 |
| 44 | Philippines | 0.3 | 2022 |
| 45 | Venezuela, RB | 0.3 | 2022 |
| 46 | Benin | 0.2 | 2022 |
| 47 | Burkina Faso | 0.2 | 2022 |
| 48 | Congo, Dem. Rep. | 0.2 | 2022 |
| 49 | Ecuador | 0.2 | 2022 |
| 50 | El Salvador | 0.2 | 2022 |
| 51 | Ethiopia | 0.2 | 2022 |
| 52 | Gambia, The | 0.2 | 2022 |
| 53 | Guyana | 0.2 | 2022 |
| 54 | Lao PDR | 0.2 | 2022 |
| 55 | Mali | 0.2 | 2022 |
| 56 | Moldova | 0.2 | 2022 |
| 57 | Nicaragua | 0.2 | 2022 |
| 58 | Papua New Guinea | 0.2 | 2022 |
| 59 | Sao Tome and Principe | 0.2 | 2022 |
| 60 | Suriname | 0.2 | 2022 |
| 61 | Trinidad and Tobago | 0.2 | 2022 |
| 62 | Uruguay | 0.2 | 2022 |
| 63 | Afghanistan | 0.1 | 2022 |
| 64 | Albania | 0.1 | 2022 |
| 65 | Algeria | 0.1 | 2022 |
| 66 | Argentina | 0.1 | 2022 |
| 67 | Armenia | 0.1 | 2022 |
| 68 | Azerbaijan | 0.1 | 2022 |
| 69 | Bangladesh | 0.1 | 2022 |
| 70 | Belarus | 0.1 | 2022 |
| 71 | Belgium | 0.1 | 2022 |
| 72 | Bhutan | 0.1 | 2022 |
| 73 | Bolivia | 0.1 | 2022 |
| 74 | Bulgaria | 0.1 | 2022 |
| 75 | Cabo Verde | 0.1 | 2022 |
| 76 | Colombia | 0.1 | 2022 |
| 77 | Comoros | 0.1 | 2022 |
| 78 | Czechia | 0.1 | 2022 |
| 79 | Denmark | 0.1 | 2022 |
| 80 | Egypt, Arab Rep. | 0.1 | 2022 |
| 81 | Eritrea | 0.1 | 2022 |
| 82 | Estonia | 0.1 | 2022 |
| 83 | Fiji | 0.1 | 2022 |
| 84 | France | 0.1 | 2022 |
| 85 | Georgia | 0.1 | 2022 |
| 86 | Greece | 0.1 | 2022 |
| 87 | Guatemala | 0.1 | 2022 |
| 88 | Honduras | 0.1 | 2022 |
| 89 | Iceland | 0.1 | 2022 |
| 90 | Indonesia | 0.1 | 2022 |
| 91 | Iran, Islamic Rep. | 0.1 | 2022 |
| 92 | Iraq | 0.1 | 2022 |
| 93 | Italy | 0.1 | 2022 |
| 94 | Jordan | 0.1 | 2022 |
| 95 | Kuwait | 0.1 | 2022 |
| 96 | Kyrgyz Republic | 0.1 | 2022 |
| 97 | Latvia | 0.1 | 2022 |
| 98 | Lebanon | 0.1 | 2022 |
| 99 | Libya | 0.1 | 2022 |
| 100 | Lithuania | 0.1 | 2022 |
| 101 | Luxembourg | 0.1 | 2022 |
| 102 | Madagascar | 0.1 | 2022 |
| 103 | Malaysia | 0.1 | 2022 |
| 104 | Maldives | 0.1 | 2022 |
| 105 | Malta | 0.1 | 2022 |
| 106 | Mauritania | 0.1 | 2022 |
| 107 | Mongolia | 0.1 | 2022 |
| 108 | Montenegro | 0.1 | 2022 |
| 109 | Morocco | 0.1 | 2022 |
| 110 | Nepal | 0.1 | 2022 |
| 111 | New Zealand | 0.1 | 2022 |
| 112 | Niger | 0.1 | 2022 |
| 113 | Oman | 0.1 | 2022 |
| 114 | Pakistan | 0.1 | 2022 |
| 115 | Paraguay | 0.1 | 2022 |
| 116 | Peru | 0.1 | 2022 |
| 117 | Portugal | 0.1 | 2022 |
| 118 | Qatar | 0.1 | 2022 |
| 119 | Romania | 0.1 | 2022 |
| 120 | Saudi Arabia | 0.1 | 2022 |
| 121 | Senegal | 0.1 | 2022 |
| 122 | Serbia | 0.1 | 2022 |
| 123 | Slovak Republic | 0.1 | 2022 |
| 124 | Slovenia | 0.1 | 2022 |
| 125 | Spain | 0.1 | 2022 |
| 126 | Sri Lanka | 0.1 | 2022 |
| 127 | Sudan | 0.1 | 2022 |
| 128 | Syrian Arab Republic | 0.1 | 2022 |
| 129 | Tajikistan | 0.1 | 2022 |
| 130 | Timor-Leste | 0.1 | 2022 |
| 131 | Tunisia | 0.1 | 2022 |
| 132 | United Arab Emirates | 0.1 | 2022 |
| 133 | Viet Nam | 0.1 | 2022 |
| 134 | Yemen, Rep. | 0.1 | 2022 |