| 2000 | 2005 | 2010 | 2015 | 2016 | 2019 | |
|---|---|---|---|---|---|---|
| Nigeria | 46.5 | 43.6 | 51.5 | 53.1 | 48.9 | 54.4 |
| Gabon | 50.5 | 52.3 | 54.0 | 56.3 | 58.7 | 57.6 |
| India | 52.9 | 55.3 | 57.3 | 59.1 | 59.3 | 60.3 |
| Luxembourg | 68.3 | 70.4 | 70.5 | 71.5 | 72.6 | 71.6 |
| Tonga | 62.9 | 63.4 | 63.9 | 63.9 | 64.3 | 64.0 |
| Republic of Moldova | 59.3 | 60.4 | 61.0 | 62.9 | 63.6 | 64.5 |
| Venezuela (Bolivarian Republic of) | 64.7 | 65.4 | 65.3 | 65.1 | 66.1 | 64.4 |
| Slovenia | 66.5 | 67.7 | 69.2 | 70.0 | 70.5 | 70.7 |
| Spain | 69.1 | 71.5 | 71.0 | 71.6 | 73.8 | 72.1 |
| Saint Lucia | 64.0 | 64.0 | 65.5 | 65.2 | 66.4 | 64.7 |
| Denmark | 67.6 | 69.6 | 69.4 | 70.5 | 71.8 | 71.0 |
| Brazil | 61.7 | 63.3 | 63.9 | 64.7 | 66.0 | 65.4 |
| Fiji | 58.1 | 59.7 | 59.5 | 59.6 | 61.3 | 59.6 |
| Cambodia | 51.4 | 54.5 | 59.0 | 60.7 | 60.8 | 61.5 |
| Iceland | 69.8 | 71.9 | 71.4 | 71.9 | 73.0 | 72.0 |
| Colombia | 64.1 | 65.1 | 67.2 | 68.3 | 67.1 | 69.0 |
| Lesotho | 42.0 | 40.0 | 41.5 | 41.6 | 46.6 | 44.2 |
| United States of America | 65.8 | 67.9 | 66.7 | 66.6 | 68.5 | 66.1 |
| China | 63.7 | 66.7 | 66.7 | 68.0 | 68.7 | 68.5 |
| Bulgaria | 63.5 | 64.7 | 65.2 | 65.9 | 66.4 | 66.3 |
| Uruguay | 65.9 | 67.3 | 67.1 | 67.5 | 68.8 | 67.5 |
| Kiribati | 49.6 | 55.0 | 51.5 | 51.6 | 57.8 | 52.6 |
| Madagascar | 51.3 | 53.6 | 55.1 | 56.3 | 58.3 | 57.3 |
| Slovakia | 64.7 | 65.8 | 66.5 | 67.6 | 68.3 | 68.5 |
| Myanmar | 52.9 | 54.9 | 57.2 | 59.6 | 58.4 | 60.9 |
| Central African Republic | 38.7 | 39.7 | 42.5 | 44.2 | 44.9 | 46.4 |
| Djibouti | 52.7 | 51.7 | 54.6 | 57.0 | 56.6 | 58.0 |
| Haiti | 50.0 | 52.5 | 28.0 | 54.6 | 55.3 | 55.8 |
| Barbados | 66.0 | 65.8 | 67.0 | 67.2 | 67.0 | 67.0 |
| Somalia | 44.0 | 46.2 | 45.9 | 48.1 | 50.0 | 49.7 |
| Singapore | 69.5 | 73.3 | 72.3 | 73.2 | 76.2 | 73.6 |
| Tajikistan | 58.3 | 60.2 | 60.9 | 61.4 | 63.5 | 62.0 |
| Iran | 62.6 | 62.0 | 65.0 | 65.7 | 65.4 | 66.3 |
| Solomon Islands | 55.7 | 59.3 | 56.6 | 57.4 | 61.9 | 57.8 |
| Seychelles | 63.1 | 64.4 | 64.0 | 64.0 | 65.7 | 64.0 |
| Bahamas | 62.7 | 65.1 | 64.3 | 64.2 | 66.8 | 64.4 |
| United Arab Emirates | 63.9 | 65.8 | 65.1 | 65.4 | 66.7 | 66.0 |
| Nepal | 56.3 | 56.7 | 59.9 | 60.2 | 61.3 | 61.3 |
| Sierra Leone | 42.2 | 39.4 | 47.8 | 49.7 | 47.6 | 52.9 |
| Mauritius | 61.9 | 63.8 | 63.4 | 64.0 | 65.8 | 63.9 |
| Vanuatu | 56.8 | 61.0 | 57.3 | 57.4 | 62.7 | 57.8 |
| Thailand | 62.6 | 63.8 | 67.1 | 68.0 | 66.8 | 68.3 |
| Uzbekistan | 58.1 | 61.0 | 62.3 | 63.5 | 64.5 | 64.7 |
| Togo | 48.9 | 48.8 | 52.0 | 54.2 | 53.9 | 56.2 |
| Latvia | 61.6 | 62.8 | 64.3 | 65.8 | 66.2 | 66.2 |
| Dominican Republic | 64.1 | 62.4 | 64.4 | 63.2 | 65.2 | 64.0 |
| Chile | 67.0 | 68.6 | 68.5 | 69.4 | 69.7 | 70.0 |
| Albania | 65.2 | 65.4 | 67.6 | 69.0 | 68.1 | 69.1 |
| Benin | 49.6 | 49.7 | 53.0 | 54.3 | 53.5 | 55.5 |
| Panama | 67.2 | 67.8 | 67.5 | 68.3 | 69.4 | 68.7 |
| Israel | 69.2 | 70.8 | 71.4 | 71.8 | 72.9 | 72.4 |
| Lithuania | 63.1 | 62.8 | 64.3 | 65.3 | 66.1 | 66.7 |
| Kazakhstan | 56.1 | 57.7 | 60.4 | 63.4 | 63.4 | 65.0 |
| Sao Tome and Principe | 55.6 | 57.1 | 59.8 | 60.9 | 60.7 | 61.6 |
| Turkmenistan | 56.6 | 58.0 | 60.1 | 61.7 | 61.4 | 62.1 |
| Belize | 62.3 | 61.4 | 64.6 | 65.1 | 62.5 | 65.3 |
| Burkina Faso | 44.9 | 45.9 | 51.2 | 53.4 | 52.9 | 54.9 |
| Bosnia and Herzegovina | 66.2 | 65.6 | 67.0 | 67.0 | 67.2 | 67.2 |
| Cuba | 67.1 | 68.3 | 68.0 | 68.0 | 69.9 | 67.8 |
| Georgia | 61.9 | 65.2 | 63.7 | 64.2 | 64.9 | 64.7 |
| Brunei Darussalam | 63.9 | 67.6 | 65.8 | 65.7 | 67.9 | 65.6 |
| Antigua and Barbuda | 65.5 | 65.4 | 66.7 | 66.8 | 67.0 | 67.0 |
| Australia | 68.6 | 71.4 | 70.2 | 70.6 | 73.0 | 70.9 |
| Austria | 68.2 | 70.6 | 69.9 | 70.4 | 72.4 | 70.9 |
| Germany | 68.5 | 70.2 | 70.0 | 70.1 | 71.6 | 70.9 |
| Liberia | 45.8 | 47.5 | 52.1 | 52.5 | 54.5 | 54.9 |
| United Republic of Tanzania | 45.4 | 47.8 | 53.4 | 56.7 | 56.5 | 58.5 |
| Russian Federation | 57.3 | 58.1 | 60.5 | 62.7 | 63.5 | 64.2 |
| Democratic Republic of the Congo | 45.3 | 47.1 | 49.9 | 52.4 | 52.5 | 54.1 |
| Italy | 69.0 | 71.9 | 71.1 | 71.6 | 73.2 | 71.9 |
| South Sudan | 46.4 | 45.1 | 52.4 | 53.0 | 50.6 | 53.7 |
| Algeria | 62.7 | 62.8 | 65.5 | 66.0 | 65.5 | 66.4 |
| New Zealand | 67.8 | 71.0 | 69.8 | 69.9 | 72.8 | 70.2 |
| Finland | 67.8 | 69.6 | 69.6 | 70.7 | 71.7 | 71.0 |
| Viet Nam | 63.3 | 65.7 | 64.5 | 64.9 | 67.5 | 65.3 |
| Senegal | 50.8 | 52.7 | 56.7 | 58.2 | 58.8 | 59.4 |
| Gambia | 51.7 | 51.0 | 54.4 | 55.8 | 54.4 | 57.0 |
| Argentina | 65.1 | 66.7 | 66.3 | 66.9 | 68.4 | 67.1 |
| Mauritania | 54.4 | 53.1 | 57.4 | 58.9 | 56.4 | 59.8 |
| Saint Vincent and the Grenadines | 62.2 | 62.6 | 64.0 | 63.5 | 63.4 | 64.0 |
| Guinea | 47.5 | 47.1 | 50.9 | 51.5 | 52.2 | 53.3 |
| Syrian Arab Republic | 62.8 | 63.6 | 65.1 | 56.3 | 55.8 | 62.9 |
| Greece | 68.6 | 70.5 | 70.0 | 70.4 | 72.0 | 70.9 |
| Cyprus | 69.1 | 71.2 | 70.8 | 71.6 | 73.3 | 72.4 |
| Grenada | 63.6 | 62.9 | 63.5 | 63.9 | 64.7 | 63.9 |
| Netherlands | 68.8 | 70.4 | 70.9 | 71.1 | 72.1 | 71.4 |
| Afghanistan | 46.8 | 49.6 | 51.1 | 52.6 | 53.0 | 53.9 |
| Peru | 64.9 | 65.1 | 67.5 | 68.8 | 67.5 | 69.5 |
| Zimbabwe | 41.0 | 40.3 | 45.2 | 51.2 | 54.4 | 53.1 |
| Portugal | 66.8 | 69.6 | 69.3 | 70.5 | 72.0 | 71.0 |
| Kyrgyzstan | 58.7 | 59.7 | 61.6 | 63.7 | 63.5 | 65.8 |
| Kuwait | 67.7 | 63.8 | 69.2 | 70.2 | 66.3 | 70.1 |
| Jamaica | 65.4 | 64.6 | 66.6 | 66.6 | 66.9 | 66.6 |
| Côte d'Ivoire | 44.0 | 44.1 | 49.5 | 52.5 | 48.3 | 54.8 |
| Namibia | 46.6 | 47.2 | 52.9 | 54.6 | 55.9 | 56.1 |
| Belgium | 67.8 | 69.9 | 69.2 | 70.0 | 71.6 | 70.6 |
| Estonia | 62.6 | 64.4 | 66.9 | 68.3 | 68.2 | 69.2 |
| Romania | 63.3 | 64.0 | 65.4 | 66.3 | 66.6 | 66.8 |
| Armenia | 63.5 | 64.7 | 64.8 | 66.0 | 66.3 | 67.1 |
| Montenegro | 65.2 | 65.6 | 66.2 | 66.6 | 68.1 | 67.0 |
| Mozambique | 43.6 | 44.1 | 46.5 | 48.6 | 52.2 | 50.4 |
| Saudi Arabia | 61.2 | 63.5 | 62.2 | 63.2 | 65.7 | 64.0 |
| Switzerland | 69.3 | 71.3 | 71.4 | 71.7 | 73.5 | 72.5 |
| Ethiopia | 44.3 | 48.6 | 55.0 | 58.3 | 57.5 | 59.9 |
| Tunisia | 64.8 | 64.4 | 66.3 | 66.7 | 66.3 | 66.9 |
| Hungary | 63.0 | 64.6 | 65.8 | 66.6 | 66.8 | 67.2 |
| Rwanda | 41.2 | 48.3 | 55.9 | 58.9 | 59.9 | 60.2 |
| Kenya | 46.9 | 48.9 | 53.5 | 56.1 | 58.9 | 57.7 |
| Honduras | 61.2 | 64.3 | 62.3 | 61.3 | 66.8 | 63.0 |
| Republic of Korea | 67.4 | 69.9 | 70.9 | 72.0 | 73.0 | 73.1 |
| South Africa | 48.5 | 47.4 | 49.6 | 54.1 | 55.7 | 56.2 |
| Eritrea | 47.0 | 52.9 | 52.6 | 54.1 | 57.4 | 55.7 |
| Burundi | 38.1 | 47.1 | 50.9 | 54.0 | 52.6 | 55.6 |
| Indonesia | 59.0 | 59.7 | 61.2 | 62.3 | 61.7 | 62.8 |
| Costa Rica | 68.0 | 70.0 | 69.2 | 70.0 | 70.9 | 70.0 |
| Bhutan | 57.1 | 56.2 | 61.7 | 62.6 | 60.7 | 63.4 |
| Sri Lanka | 63.0 | 65.7 | 64.2 | 66.6 | 66.8 | 67.0 |
| Mexico | 64.6 | 66.2 | 65.1 | 65.8 | 67.7 | 65.8 |
| Maldives | 62.4 | 65.3 | 68.0 | 69.1 | 69.8 | 70.0 |
| Azerbaijan | 58.5 | 61.5 | 61.7 | 63.1 | 64.9 | 63.6 |
| Czech Republic | 65.9 | 67.0 | 67.7 | 68.3 | 69.3 | 68.8 |
| Paraguay | 65.0 | 63.4 | 65.2 | 65.6 | 65.3 | 65.8 |
| Botswana | 40.1 | 45.3 | 50.6 | 52.8 | 57.5 | 53.9 |
| Iraq | 59.5 | 56.4 | 60.9 | 60.8 | 59.0 | 62.7 |
| Canada | 69.4 | 71.3 | 70.8 | 71.1 | 73.2 | 71.3 |
| Serbia | 63.4 | 65.2 | 65.7 | 66.4 | 67.4 | 66.9 |
| Uganda | 42.5 | 45.5 | 52.1 | 56.3 | 54.9 | 58.2 |
| Chad | 44.7 | 42.7 | 48.6 | 50.5 | 47.2 | 52.0 |
| Bangladesh | 57.0 | 58.6 | 61.2 | 63.8 | 63.3 | 64.3 |
| Pakistan | 52.3 | 54.2 | 54.5 | 55.8 | 57.7 | 56.9 |
| Samoa | 60.7 | 63.1 | 61.5 | 61.9 | 66.0 | 62.1 |
| Micronesia (Federated States of) | 54.5 | 59.4 | 55.8 | 55.8 | 61.1 | 56.0 |
| Trinidad and Tobago | 61.4 | 61.6 | 63.3 | 65.2 | 63.3 | 66.2 |
| Mongolia | 53.8 | 57.9 | 57.8 | 59.9 | 61.9 | 60.3 |
| Democratic People's Republic of Korea | 57.8 | 61.5 | 63.0 | 64.3 | 64.6 | 65.0 |
| Qatar | 62.4 | 66.1 | 64.7 | 66.4 | 68.6 | 67.1 |
| Angola | 42.9 | 46.7 | 50.6 | 53.7 | 55.8 | 54.8 |
| Ghana | 51.9 | 51.9 | 54.3 | 56.5 | 56.4 | 58.0 |
| Norway | 68.4 | 71.2 | 70.2 | 71.2 | 73.0 | 71.4 |
| Congo | 45.4 | 49.2 | 53.0 | 54.9 | 56.7 | 56.2 |
| इस्वातिनी | 41.3 | 38.5 | 41.4 | 46.9 | 50.2 | 50.1 |
| केप वर्दे | 62.0 | 61.9 | 64.5 | 65.2 | 64.5 | 64.8 |
| Guyana | 55.0 | 56.9 | 56.6 | 57.2 | 58.3 | 57.2 |
| Morocco | 60.7 | 61.4 | 62.5 | 63.3 | 65.3 | 63.7 |
| Malta | 68.5 | 70.5 | 70.4 | 71.3 | 72.2 | 71.5 |
| Egypt | 61.2 | 59.7 | 61.7 | 62.0 | 61.1 | 63.0 |
| North Macedonia | 63.2 | 65.9 | 64.9 | 65.3 | 67.1 | 66.1 |
| Sudan | 54.3 | 52.5 | 57.7 | 58.9 | 55.7 | 59.9 |
| Japan | 71.6 | 73.2 | 73.0 | 73.6 | 74.8 | 74.1 |
| France | 69.3 | 71.3 | 71.2 | 71.7 | 73.4 | 72.1 |
| Lebanon | 64.7 | 64.6 | 65.4 | 65.7 | 66.1 | 66.0 |
| Poland | 65.0 | 66.3 | 67.1 | 68.0 | 68.5 | 68.7 |
| Zambia | 39.0 | 42.8 | 49.4 | 52.7 | 54.3 | 54.4 |
| Ukraine | 59.7 | 59.6 | 62.2 | 63.8 | 64.0 | 64.3 |
| Lao People’s Democratic Republic | 51.8 | 53.4 | 57.4 | 59.3 | 57.9 | 60.5 |
| Turkey | 65.0 | 62.6 | 66.9 | 67.7 | 66.0 | 68.4 |
| Malaysia | 64.0 | 64.8 | 65.4 | 65.8 | 66.6 | 65.7 |
| Niger | 44.2 | 45.6 | 51.9 | 54.1 | 52.5 | 55.5 |
| Suriname | 61.3 | 60.4 | 62.6 | 63.2 | 63.2 | 62.4 |
| Sweden | 69.9 | 71.2 | 71.2 | 71.4 | 72.4 | 71.9 |
| Nicaragua | 63.7 | 63.8 | 64.7 | 65.2 | 66.9 | 65.5 |
| El Salvador | 62.7 | 62.6 | 64.4 | 63.5 | 65.5 | 64.9 |
| Ecuador | 65.2 | 65.9 | 65.8 | 67.5 | 67.9 | 68.5 |
| Guinea Bissau | 44.0 | 46.4 | 48.6 | 50.9 | 51.7 | 52.6 |
| Guatemala | 57.8 | 60.4 | 60.1 | 61.5 | 64.2 | 62.3 |
| Cameroon | 46.1 | 45.4 | 49.6 | 51.8 | 51.1 | 54.5 |
| Oman | 60.9 | 64.4 | 62.0 | 63.7 | 65.6 | 64.7 |
| Jordan | 63.6 | 63.5 | 66.7 | 67.6 | 66.4 | 67.6 |
| Belarus | 60.8 | 60.8 | 62.3 | 65.1 | 65.5 | 66.0 |
| Philippines | 60.6 | 59.6 | 61.6 | 61.9 | 61.7 | 62.0 |
| Comoros | 53.8 | 53.0 | 57.0 | 58.2 | 56.6 | 58.9 |
| Bolivia | 57.9 | 58.5 | 61.7 | 62.7 | 63.0 | 63.3 |
| Croatia | 65.4 | 66.6 | 67.3 | 67.9 | 69.0 | 68.6 |
| Malawi | 39.1 | 43.5 | 49.6 | 54.9 | 56.2 | 57.1 |
| Papua New Guinea | 55.3 | 55.5 | 55.4 | 56.4 | 58.0 | 57.1 |
| Bahrain | 61.9 | 64.5 | 65.0 | 66.2 | 68.1 | 65.9 |
| United Kingdom | 67.6 | 69.9 | 69.4 | 69.7 | 71.9 | 70.1 |
| Timor-Leste | 53.1 | 55.0 | 59.3 | 60.3 | 59.2 | 60.9 |
| Libya | 64.6 | 62.1 | 65.7 | 64.3 | 62.3 | 65.2 |
| Equatorial Guinea | 46.8 | 48.6 | 51.7 | 52.9 | 53.8 | 53.9 |
| Yemen | 54.5 | 52.8 | 58.6 | 58.4 | 55.1 | 57.5 |
| Ireland | 67.1 | 69.8 | 70.1 | 70.7 | 72.1 | 71.1 |
| Mali | 45.6 | 45.3 | 51.3 | 53.0 | 50.7 | 54.6 |