| Country Usage (%) |
| Argentina | 99 in 2022 | WHO |
| Brazil | 99 in 2022 | WHO |
| Chile | 99 in 2022 | WHO |
| Costa Rica | 99 in 2022 | WHO |
| Ecuador | 99 in 2022 | WHO |
| Falkland Islands | 99 in 2022 | WHO |
| Mexico | 99 in 2022 | WHO |
| Paraguay | 99 in 2022 | WHO |
| Tonga | 99 in 2022 | WHO |
| Tuvalu | 99 in 2022 | WHO |
| Uruguay | 99 in 2022 | WHO |
| Panama | 98.84 in 2022 | WHO |
| Saint Lucia | 98.5 in 2022 | WHO |
| Palau | 98.42 in 2022 | WHO |
| Fiji | 98.36 in 2022 | WHO |
| Antigua and Barbuda | 98 in 2022 | WHO |
| Saint Vincent and the Grenadines | 97.89 in 2018 | WHO |
| Belize | 96.36 in 2022 | WHO |
| El Salvador | 95.87 in 2022 | WHO |
| Honduras | 95.83 in 2022 | WHO |
| Nicaragua | 95.49 in 2020 | WHO |
| Peru | 95.22 in 2022 | WHO |
| Colombia | 94.86 in 2022 | WHO |
| Samoa | 94.13 in 2022 | WHO |
| Jamaica | 91.77 in 2022 | WHO |
| Venezuela (Bolivarian Republic of) | 90.42 in 2015 | WHO |
| Guatemala | 88.77 in 2022 | WHO |
| Suriname | 88.73 in 2022 | WHO |
| Cuba | 86.61 in 2022 | WHO |
| Bolivia | 85.88 in 2022 | WHO |
| Guyana | 84.29 in 2022 | WHO |
| Dominican Republic | 83.2 in 2022 | WHO |
| Vanuatu | 77.97 in 2022 | WHO |
| Solomon Islands | 70.5 in 2021 | WHO |
| Kiribati | 60.81 in 2022 | WHO |
| Papua New Guinea | 53.31 in 2022 | WHO |
| Micronesia (Federated States of) | 41.88 in 2014 | WHO |
| Marshall Islands | 33.13 in 2022 | WHO |
| Haiti | 15.32 in 2022 | WHO |
| Nauru | 1.85 in 2019 | WHO |
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