| Country Usage (%) |
| Chile | 99 in 2022 | WHO |
| El Salvador | 99 in 2022 | WHO |
| Palau | 99 in 2022 | WHO |
| Argentina | 98.49 in 2015 | WHO |
| Costa Rica | 96.37 in 2022 | WHO |
| Nicaragua | 96.24 in 2020 | WHO |
| Uruguay | 94.59 in 2022 | WHO |
| Samoa | 91.96 in 2022 | WHO |
| Colombia | 91.56 in 2022 | WHO |
| Brazil | 88.86 in 2022 | WHO |
| Fiji | 86.38 in 2022 | WHO |
| Honduras | 78.44 in 2022 | WHO |
| Ecuador | 74.65 in 2022 | WHO |
| Paraguay | 72.21 in 2022 | WHO |
| Guatemala | 68.12 in 2022 | WHO |
| Suriname | 63.41 in 2022 | WHO |
| Peru | 59.82 in 2022 | WHO |
| Vanuatu | 56.26 in 2022 | WHO |
| Tonga | 50.78 in 2022 | WHO |
| Dominican Republic | 46.88 in 2022 | WHO |
| Kiribati | 20.37 in 2022 | WHO |
| Tuvalu | 10.47 in 2022 | WHO |
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