| Country Usage (%) |
| Argentina | 99 in 2022 | WHO |
| Brazil | 99 in 2022 | WHO |
| Chile | 99 in 2022 | WHO |
| Colombia | 99 in 2022 | WHO |
| Costa Rica | 99 in 2022 | WHO |
| Ecuador | 99 in 2022 | WHO |
| Falkland Islands | 99 in 2022 | WHO |
| Nauru | 99 in 2020 | WHO |
| Paraguay | 99 in 2022 | WHO |
| Samoa | 99 in 2022 | WHO |
| Tonga | 99 in 2022 | WHO |
| Uruguay | 98.96 in 2022 | WHO |
| Mexico | 98.35 in 2022 | WHO |
| Fiji | 98.33 in 2022 | WHO |
| Belize | 98.22 in 2022 | WHO |
| Saint Vincent and the Grenadines | 98.15 in 2018 | WHO |
| Panama | 97.92 in 2022 | WHO |
| Dominican Republic | 97.78 in 2022 | WHO |
| Palau | 97.7 in 2022 | WHO |
| Suriname | 97.66 in 2022 | WHO |
| Nicaragua | 97.17 in 2020 | WHO |
| El Salvador | 97.02 in 2022 | WHO |
| Honduras | 96.66 in 2022 | WHO |
| Bolivia | 96.45 in 2022 | WHO |
| Guatemala | 94.95 in 2022 | WHO |
| Saint Lucia | 93.63 in 2022 | WHO |
| Cuba | 93.48 in 2022 | WHO |
| Jamaica | 93.32 in 2022 | WHO |
| Venezuela (Bolivarian Republic of) | 92.82 in 2015 | WHO |
| Vanuatu | 91.62 in 2022 | WHO |
| Peru | 90.05 in 2022 | WHO |
| Papua New Guinea | 86.53 in 2022 | WHO |
| Tuvalu | 86.38 in 2022 | WHO |
| Guyana | 83.8 in 2022 | WHO |
| Solomon Islands | 83.42 in 2021 | WHO |
| Marshall Islands | 79.32 in 2022 | WHO |
| Micronesia (Federated States of) | 70.86 in 2015 | WHO |
| Kiribati | 68.12 in 2022 | WHO |
| Antigua and Barbuda | 34.86 in 2022 | WHO |
| Haiti | 8.13 in 2022 | WHO |
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