| Country (%) |
| Afghanistan | 14.28 in 2022 | WHO |
| Albania | 3.6 in 2022 | WHO |
| Algeria | 1 in 2022 | WHO |
| Andorra | 1 in 2022 | WHO |
| Angola | 22.93 in 2022 | WHO |
| Antigua and Barbuda | 1.43 in 2022 | WHO |
| Argentina | 2.68 in 2016 | WHO |
| Armenia | 1 in 2022 | WHO |
| Australia | 1 in 2022 | WHO |
| Austria | 1 in 2022 | WHO |
| Azerbaijan | 3.02 in 2022 | WHO |
| Bangladesh | 1 in 2022 | WHO |
| Belarus | 1.93 in 2022 | WHO |
| Belgium | 1 in 2022 | WHO |
| Belize | 1 in 2022 | WHO |
| Benin | 23.87 in 2022 | WHO |
| Bhutan | 1 in 2022 | WHO |
| Bolivia | 4.23 in 2022 | WHO |
| Bosnia and Herzegovina | 1 in 2022 | WHO |
| Botswana | 2.84 in 2022 | WHO |
| Brazil | 2.01 in 2022 | WHO |
| Brunei Darussalam | 1 in 2015 | WHO |
| Bulgaria | 2.7 in 2022 | WHO |
| Burkina Faso | 28.49 in 2022 | WHO |
| Burundi | 16.9 in 2022 | WHO |
| Cabo Verde | 8.33 in 2022 | WHO |
| Cambodia | 4.24 in 2022 | WHO |
| Cameroon | 23.24 in 2022 | WHO |
| Canada | 1 in 2022 | WHO |
| Central African Republic | 46.91 in 2022 | WHO |
| Chad | 34.71 in 2022 | WHO |
| Chile | 1 in 2022 | WHO |
| China | 2.84 in 2022 | WHO |
| Colombia | 2.79 in 2022 | WHO |
| Comoros | 11.52 in 2019 | WHO |
| Congo | 24.41 in 2021 | WHO |
| Costa Rica | 1 in 2022 | WHO |
| Côte d'Ivoire | 21.45 in 2022 | WHO |
| Croatia | 1 in 2017 | WHO |
| Cuba | 2.3 in 2022 | WHO |
| Cyprus | 1 in 2022 | WHO |
| Czech Republic | 1 in 2022 | WHO |
| Democratic People's Republic of Korea | 10.89 in 2022 | WHO |
| Democratic Republic of the Congo | 53.77 in 2022 | WHO |
| Denmark | 1 in 2022 | WHO |
| Djibouti | 30.74 in 2022 | WHO |
| Dominican Republic | 1 in 2022 | WHO |
| Ecuador | 7.25 in 2022 | WHO |
| Egypt | 1.26 in 2022 | WHO |
| El Salvador | 1 in 2022 | WHO |
| Equatorial Guinea | 46.29 in 2017 | WHO |
| Eritrea | 20.08 in 2016 | WHO |
| Estonia | 1 in 2022 | WHO |
| Eswatini | 9.56 in 2022 | WHO |
| Ethiopia | 20.33 in 2022 | WHO |
| Falkland Islands | 21.83 in 2020 | WHO |
| Fiji | 3.51 in 2022 | WHO |
| Finland | 1 in 2022 | WHO |
| France | 1 in 2022 | WHO |
| Gabon | 16.78 in 2022 | WHO |
| Gambia | 11.04 in 2022 | WHO |
| Georgia | 5.22 in 2022 | WHO |
| Germany | 1 in 2022 | WHO |
| Ghana | 3.92 in 2022 | WHO |
| Greece | 1 in 2022 | WHO |
| Guatemala | 3.89 in 2022 | WHO |
| Guinea | 12.59 in 2022 | WHO |
| Guinea Bissau | 34.06 in 2022 | WHO |
| Guyana | 1.2 in 2022 | WHO |
| Haiti | 43.9 in 2022 | WHO |
| Honduras | 7.76 in 2022 | WHO |
| Hong Kong Urban | 2 timeseries | |
| Hungary | 1 in 2022 | WHO |
| Iceland | 1 in 2022 | WHO |
| India | 2.27 in 2022 | WHO |
| Indonesia | 8.6 in 2022 | WHO |
| Iran | 1.03 in 2022 | WHO |
| Iraq | 1 in 2022 | WHO |
| Ireland | 2.96 in 2022 | WHO |
| Israel | 1 in 2022 | WHO |
| Italy | 1 in 2017 | WHO |
| Jamaica | 2.57 in 2022 | WHO |
| Jordan | 2.36 in 2022 | WHO |
| Kazakhstan | 6.01 in 2021 | WHO |
| Kenya | 11.52 in 2022 | WHO |
| Kiribati | 38.35 in 2022 | WHO |
| Kuwait Urban | 2 timeseries | |
| Kyrgyzstan | 2.95 in 2022 | WHO |
| Lao People’s Democratic Republic | 15.01 in 2022 | WHO |
| Latvia | 1.13 in 2022 | WHO |
| Lesotho | 13.06 in 2022 | WHO |
| Liberia | 5.53 in 2022 | WHO |
| Lithuania | 6.22 in 2022 | WHO |
| Luxembourg | 1.4 in 2022 | WHO |
| Macau Urban | 2 timeseries | |
| Madagascar | 43.03 in 2022 | WHO |
| Malawi | 5.62 in 2022 | WHO |
| Malaysia | 9.4 in 2022 | WHO |
| Maldives | 1 in 2022 | WHO |
| Mali | 19.8 in 2022 | WHO |
| Malta | 1 in 2022 | WHO |
| Marshall Islands | 7.79 in 2022 | WHO |
| Mauritania | 30.14 in 2022 | WHO |
| Mauritius | 1 in 2022 | WHO |
| Mexico | 1.57 in 2022 | WHO |
| Micronesia (Federated States of) | 14.02 in 2015 | WHO |
| Monaco Urban | 2 timeseries | |
| Mongolia | 11.89 in 2022 | WHO |
| Montenegro | 1.82 in 2022 | WHO |
| Morocco | 28.67 in 2022 | WHO |
| Mozambique | 23.75 in 2022 | WHO |
| Myanmar | 7.77 in 2022 | WHO |
| Namibia | 7.15 in 2022 | WHO |
| Nauru Urban | 2 timeseries | |
| Nepal | 2.76 in 2022 | WHO |
| Netherlands | 1 in 2022 | WHO |
| New Zealand | 1 in 2022 | WHO |
| Nicaragua | 29.78 in 2020 | WHO |
| Niger | 34.14 in 2022 | WHO |
| Nigeria | 21.49 in 2022 | WHO |
| North Macedonia | 1 in 2022 | WHO |
| Norway | 1 in 2022 | WHO |
| Oman | 1.9 in 2022 | WHO |
| Pakistan | 4.75 in 2022 | WHO |
| Palau | 1 in 2022 | WHO |
| Palestine | 1 in 2022 | WHO |
| Panama | 6.92 in 2022 | WHO |
| Papua New Guinea | 29.41 in 2022 | WHO |
| Paraguay | 1 in 2022 | WHO |
| Peru | 8.22 in 2022 | WHO |
| Philippines | 3.78 in 2022 | WHO |
| Poland | 17.79 in 2022 | WHO |
| Portugal | 2.15 in 2022 | WHO |
| Republic of Moldova | 10.71 in 2022 | WHO |
| Romania | 1 in 2022 | WHO |
| Russian Federation | 6.92 in 2022 | WHO |
| Rwanda | 11.91 in 2022 | WHO |
| Saint Lucia | 1.45 in 2022 | WHO |
| Saint Vincent and the Grenadines | 3.01 in 2018 | WHO |
| Samoa | 1 in 2022 | WHO |
| Sao Tome and Principe | 1.92 in 2022 | WHO |
| Saudi Arabia | 1 in 2022 | WHO |
| Senegal | 18.06 in 2022 | WHO |
| Serbia | 1 in 2022 | WHO |
| Sierra Leone | 23.66 in 2022 | WHO |
| Singapore Urban | 2 timeseries | |
| Slovakia | 1 in 2022 | WHO |
| Slovenia | 1 in 2017 | WHO |
| Solomon Islands | 34.07 in 2022 | WHO |
| Somalia | 20.39 in 2022 | WHO |
| South Africa | 3.28 in 2022 | WHO |
| South Sudan | 14.11 in 2022 | WHO |
| Spain | 1 in 2022 | WHO |
| Sri Lanka | 8.07 in 2022 | WHO |
| Sudan | 6.16 in 2022 | WHO |
| Suriname | 1 in 2022 | WHO |
| Sweden | 1 in 2022 | WHO |
| Switzerland | 1 in 2022 | WHO |
| Syrian Arab Republic | 1 in 2022 | WHO |
| Tajikistan | 4.14 in 2022 | WHO |
| Thailand | 1 in 2022 | WHO |
| Timor-Leste | 11.53 in 2022 | WHO |
| Togo | 15.19 in 2022 | WHO |
| Tonga | 1 in 2022 | WHO |
| Tunisia | 3.25 in 2022 | WHO |
| Turkey | 1 in 2022 | WHO |
| Turkmenistan | 1 in 2022 | WHO |
| Tuvalu | 1 in 2022 | WHO |
| Uganda | 13.22 in 2022 | WHO |
| Ukraine | 1 in 2022 | WHO |
| United Arab Emirates | 1 in 2022 | WHO |
| United Kingdom | 1 in 2022 | WHO |
| United Republic of Tanzania | 16.65 in 2022 | WHO |
| United States of America | 1 in 2022 | WHO |
| Uruguay | 1 in 2022 | WHO |
| Uzbekistan | 1 in 2022 | WHO |
| Vanuatu | 2.99 in 2022 | WHO |
| Venezuela (Bolivarian Republic of) | 5.03 in 2015 | WHO |
| Viet Nam | 2.77 in 2022 | WHO |
| Yemen | 9.71 in 2022 | WHO |
| Zambia | 28.22 in 2022 | WHO |
| Zimbabwe | 23.11 in 2022 | WHO |
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