| 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 |
|---|
| |
| World | | | | | | | | | | | | | | | | | | | | | | | |
| REGIONS |
| Africa | | | | | | | | | | | | | | | | | | | | | | | |
| Asia and the Pacific (UNEP) | | | | | | | | | | | | | | | | | | | | |
| Europe | | | | | | | | | | | | | | | | | | | | | | | |
| Northern America | | | | | | | | | | | | | | | | | | | | | | | |
| Western Asia | | | | | | | | | | | | | | | | | | | | | | | |
| SUB-REGIONS |
| Australia and New Zealand | | | | | | | | | | | | | | | | | | | | | | | |
| Caribbean | | | | | | | | | | | | | | | | | | | | |
| Central America | | | | | | | | | | | | | | | | | | | | | | | |
| Central Asia | | | | | | | | | | | | | | | | | | | | | | | |
| Central Asia and Southern Asia | | | | | | | | | | | | | | | | | | | | |
| Eastern Africa | | | | | | | | | | | | | | | | | | | | | | | |
| Eastern Asia | | | | | | | | | | | | | | | | | | | | |
| Eastern Asia and South-eastern Asia | | | | | | | | | | | | | | | | | | | | |
| Eastern Europe | | | | | | | | | | | | | | | | | | | | | | | |
| Melanesia | | | | | | | | | | | | | | | | | | | | | | | |
| Micronesia | | | | | | | | | | | | | | | | | | | | | | | |
| Middle Africa | | | | | | | | | | | | | | | | | | | | |
| Northern Africa | | | | | | | | | | | | | | | | | | | | | | | |
| Northern America | | | | | | | | | | | | | | | | | | | | | | | |
| Northern Europe | | | | | | | | | | | | | | | | | | | | | | | |
| Oceania | | | | | | | | | | | | | | | | | | | | | | | |
| Oceania excluding Australia and New Zealand | | | | | | | | | | | | | | | | | | | | | | | |
| Polynesia | | | | | | | | | | | | | | | | | | | | | | | |
| South America | | | | | | | | | | | | | | | | | | | | |
| South-eastern Asia | | | | | | | | | | | | | | | | | | | | |
| Southern Africa | | | | | | | | | | | | | | | | | | | | |
| Southern Asia | | | | | | | | | | | | | | | | | | | | |
| Southern Europe | | | | | | | | | | | | | | | | | | | | | | | |
| Western Africa | | | | | | | | | | | | | | | | | | | | | | | |
| Western Asia | | | | | | | | | | | | | | | | | | | | | | | |
| Western Asia and Northern Africa | | | | | | | | | | | | | | | | | | | | | | | |
| Western Europe | | | | | | | | | | | | | | | | | | | | | | | |
| SPECIAL REGIONS |
| Developed | | | | | | | | | | | | | | | | | | | | | | | |
| Developing | | | | | | | | | | | | | | | | | | | | |
| Least Developed Countries (LDCs) | | | | | | | | | | | | | | | | | | | | |
| Non-SIDS | | | | | | | | | | | | | | | | | | | | |
| Small Island Developing States (SIDS) | | | | | | | | | | | | | | | | | | | | | | | |
| |
| Australia | | | | | | | | | | | | | | | | | | | | | | | |
| Canada | | | | | | | | | | | | | | | | | | | | | | | |
| United States of America | | | | | | | | | | | | | | | | | | | | | | | |
| AFRICA |
| Algeria | | | | | | | | | | | | | | | | | | | | | | | |
| Angola | | | | | | | | | | | | | | | | | | | | | | | |
| Benin | | | | | | | | | | | | | | | | | | | | | | | |
| Botswana | | | | | | | | | | | | | | | | | | | | | | | |
| Burkina Faso | | | | | | | | | | | | | | | | | | | | | | | |
| Burundi | | | | | | | | | | | | | | | | | | | | | | | |
| Cabo Verde | | | | | | | | | | | | | | | | | | | | | | | |
| Cameroon | | | | | | | | | | | | | | | | | | | | | | | |
| Central African Republic | | | | | | | | | | | | | | | | | | | | | | | |
| Chad | | | | | | | | | | | | | | | | | | | | | | | |
| Comoros | | | | | | | | | | | | | | | | | | | | | | | |
| Congo | | | | | | | | | | | | | | | | | | | | | | | |
| Cote d'Ivoire | | | | | | | | | | | | | | | | | | | | | | | |
| Democratic Republic of the Congo | | | | | | | | | | | | | | | | | | | | | | | |
| Djibouti | | | | | | | | | | | | | | | | | | | | | | | |
| Egypt | | | | | | | | | | | | | | | | | | | | | | | |
| Equatorial Guinea | | | | | | | | | | | | | | | | | | | | | | | |
| Eritrea | | | | | | | | | | | | | | | | | | | | | | | |
| Eswatini | | | | | | | | | | | | | | | | | | | | | | | |
| Ethiopia | | | | | | | | | | | | | | | | | | | | | | | |
| Gabon | | | | | | | | | | | | | | | | | | | | | | | |
| Gambia | | | | | | | | | | | | | | | | | | | | | | | |
| Ghana | | | | | | | | | | | | | | | | | | | | | | | |
| Guinea | | | | | | | | | | | | | | | | | | | | | | | |
| Guinea-Bissau | | | | | | | | | | | | | | | | | | | | | | | |
| Kenya | | | | | | | | | | | | | | | | | | | | | | | |
| Lesotho | | | | | | | | | | | | | | | | | | | | | | | |
| Liberia | | | | | | | | | | | | | | | | | | | | | | | |
| Libya | | | | | | | | | | | | | | | | | | | | | | | |
| Madagascar | | | | | | | | | | | | | | | | | | | | | | | |
| Malawi | | | | | | | | | | | | | | | | | | | | | | | |
| Mali | | | | | | | | | | | | | | | | | | | | | | | |
| Mauritania | | | | | | | | | | | | | | | | | | | | | | | |
| Mauritius | | | | | | | | | | | | | | | | | | | | | | | |
| Morocco | | | | | | | | | | | | | | | | | | | | | | | |
| Mozambique | | | | | | | | | | | | | | | | | | | | | | | |
| Namibia | | | | | | | | | | | | | | | | | | | | | | | |
| Niger | | | | | | | | | | | | | | | | | | | | | | | |
| Nigeria | | | | | | | | | | | | | | | | | | | | | | | |
| Rwanda | | | | | | | | | | | | | | | | | | | | | | | |
| Sao Tome and Principe | | | | | | | | | | | | | | | | | | | | | | | |
| Senegal | | | | | | | | | | | | | | | | | | | | | | | |
| Seychelles | | | | | | | | | | | | | | | | | | | | | | | |
| Sierra Leone | | | | | | | | | | | | | | | | | | | | | | | |
| Somalia | | | | | | | | | | | | | | | | | | | | | | | |
| South Africa | | | | | | | | | | | | | | | | | | | | | | | |
| South Sudan | | | | | | | | | | | | | | | | | | | | | | | |
| Sudan | | | | | | | | | | | | | | | | | | | | | | | |
| Togo | | | | | | | | | | | | | | | | | | | | | | | |
| Tunisia | | | | | | | | | | | | | | | | | | | | | | | |
| Uganda | | | | | | | | | | | | | | | | | | | | | | | |
| United Republic of Tanzania | | | | | | | | | | | | | | | | | | | | | | | |
| Zambia | | | | | | | | | | | | | | | | | | | | | | | |
| Zimbabwe | | | | | | | | | | | | | | | | | | | | | | | |
| OCEANIA |
| Fiji | | | | | | | | | | | | | | | | | | | | | | | |
| Kiribati | | | | | | | | | | | | | | | | | | | | | | | |
| Marshall Islands | | | | | | | | | | | | | | | | | | | | | | | |
| Micronesia (Federated States of) | | | | | | | | | | | | | | | | | | | | | | | |
| Nauru | | | | | | | | | | | | | | | | | | | | | | | |
| New Zealand | | | | | | | | | | | | | | | | | | | | | | | |
| Palau | | | | | | | | | | | | | | | | | | | | | | | |
| Papua New Guinea | | | | | | | | | | | | | | | | | | | | | | | |
| Samoa | | | | | | | | | | | | | | | | | | | | | | | |
| Solomon Islands | | | | | | | | | | | | | | | | | | | | | | | |
| Tonga | | | | | | | | | | | | | | | | | | | | | | | |
| Tuvalu | | | | | | | | | | | | | | | | | | | | | | | |
| Vanuatu | | | | | | | | | | | | | | | | | | | | | | | |
| AMERICAS |
| Antigua and Barbuda | | | | | | | | | | | | | | | | | | | | | | | |
| Argentina | | | | | | | | | | | | | | | | | | | | | | | |
| Bahamas | | | | | | | | | | | | | | | | | | | | | | | |
| Barbados | | | | | | | | | | | | | | | | | | | | | | | |
| Belize | | | | | | | | | | | | | | | | | | | | | | | |
| Bolivia (Plurinational State of) | | | | | | | | | | | | | | | | | | | | | | | |
| Brazil | | | | | | | | | | | | | | | | | | | | | | | |
| Chile | | | | | | | | | | | | | | | | | | | | | | | |
| Colombia | | | | | | | | | | | | | | | | | | | | | | | |
| Costa Rica | | | | | | | | | | | | | | | | | | | | | | | |
| Cuba | | | | | | | | | | | | | | | | | | | | | | | |
| Dominica | | | | | | | | | | | | | | | | | | | | | | | |
| Dominican Republic | | | | | | | | | | | | | | | | | | | | | | | |
| Ecuador | | | | | | | | | | | | | | | | | | | | | | | |
| El Salvador | | | | | | | | | | | | | | | | | | | | | | | |
| Grenada | | | | | | | | | | | | | | | | | | | | | | | |
| Guatemala | | | | | | | | | | | | | | | | | | | | | | | |
| Guyana | | | | | | | | | | | | | | | | | | | | | | | |
| Haiti | | | | | | | | | | | | | | | | | | | | | | | |
| Honduras | | | | | | | | | | | | | | | | | | | | | | | |
| Jamaica | | | | | | | | | | | | | | | | | | | | | | | |
| Mexico | | | | | | | | | | | | | | | | | | | | | | | |
| Nicaragua | | | | | | | | | | | | | | | | | | | | | | | |
| Panama | | | | | | | | | | | | | | | | | | | | | | | |
| Paraguay | | | | | | | | | | | | | | | | | | | | | | | |
| Peru | | | | | | | | | | | | | | | | | | | | | | | |
| Saint Kitts and Nevis | | | | | | | | | | | | | | | | | | | | | | | |
| Saint Lucia | | | | | | | | | | | | | | | | | | | | | | | |
| Saint Vincent and the Grenadines | | | | | | | | | | | | | | | | | | | | | | | |
| Suriname | | | | | | | | | | | | | | | | | | | | | | | |
| Trinidad and Tobago | | | | | | | | | | | | | | | | | | | | | | | |
| Uruguay | | | | | | | | | | | | | | | | | | | | | | | |
| Venezuela (Bolivarian Republic of) | | | | | | | | | | | | | | | | | | | | | | | |
| ASIA |
| Afghanistan | | | | | | | | | | | | | | | | | | | | | | | |
| Armenia | | | | | | | | | | | | | | | | | | | | | | | |
| Azerbaijan | | | | | | | | | | | | | | | | | | | | | | | |
| Bahrain | | | | | | | | | | | | | | | | | | | | | | | |
| Bangladesh | | | | | | | | | | | | | | | | | | | | | | | |
| Bhutan | | | | | | | | | | | | | | | | | | | | | | | |
| Brunei Darussalam | | | | | | | | | | | | | | | | | | | | | | | |
| Cambodia | | | | | | | | | | | | | | | | | | | | | | | |
| China | | | | | | | | | | | | | | | | | | | | | | | |
| Cyprus | | | | | | | | | | | | | | | | | | | | | | | |
| Democratic People's Republic of Korea | | | | | | | | | | | | | | | | | | | | | | | |
| Georgia | | | | | | | | | | | | | | | | | | | | | | | |
| India | | | | | | | | | | | | | | | | | | | | | | | |
| Indonesia | | | | | | | | | | | | | | | | | | | | | | | |
| Iran (Islamic Republic of) | | | | | | | | | | | | | | | | | | | | | | | |
| Iraq | | | | | | | | | | | | | | | | | | | | | | | |
| Israel | | | | | | | | | | | | | | | | | | | | | | | |
| Japan | | | | | | | | | | | | | | | | | | | | | | | |
| Jordan | | | | | | | | | | | | | | | | | | | | | | | |
| Kazakhstan | | | | | | | | | | | | | | | | | | | | | | | |
| Kuwait | | | | | | | | | | | | | | | | | | | | | | | |
| Kyrgyzstan | | | | | | | | | | | | | | | | | | | | | | | |
| Lao People's Democratic Republic | | | | | | | | | | | | | | | | | | | | | | | |
| Lebanon | | | | | | | | | | | | | | | | | | | | | | | |
| Malaysia | | | | | | | | | | | | | | | | | | | | | | | |
| Maldives | | | | | | | | | | | | | | | | | | | | | | | |
| Mongolia | | | | | | | | | | | | | | | | | | | | | | | |
| Myanmar | | | | | | | | | | | | | | | | | | | | | | | |
| Nepal | | | | | | | | | | | | | | | | | | | | | | | |
| Oman | | | | | | | | | | | | | | | | | | | | | | | |
| Pakistan | | | | | | | | | | | | | | | | | | | | | | | |
| Philippines | | | | | | | | | | | | | | | | | | | | | | | |
| Qatar | | | | | | | | | | | | | | | | | | | | | | | |
| Republic of Korea | | | | | | | | | | | | | | | | | | | | | | | |
| Saudi Arabia | | | | | | | | | | | | | | | | | | | | | | | |
| Singapore | | | | | | | | | | | | | | | | | | | | | | | |
| Sri Lanka | | | | | | | | | | | | | | | | | | | | | | | |
| Syrian Arab Republic | | | | | | | | | | | | | | | | | | | | | | | |
| Tajikistan | | | | | | | | | | | | | | | | | | | | | | | |
| Thailand | | | | | | | | | | | | | | | | | | | | | | | |
| Timor-Leste | | | | | | | | | | | | | | | | | | | | | | | |
| Turkey | | | | | | | | | | | | | | | | | | | | | | | |
| Turkmenistan | | | | | | | | | | | | | | | | | | | | | | | |
| United Arab Emirates | | | | | | | | | | | | | | | | | | | | | | | |
| Uzbekistan | | | | | | | | | | | | | | | | | | | | | | | |
| Viet Nam | | | | | | | | | | | | | | | | | | | | | | | |
| Yemen | | | | | | | | | | | | | | | | | | | | | | | |
| EUROPE |
| Albania | | | | | | | | | | | | | | | | | | | | | | | |
| Andorra | | | | | | | | | | | | | | | | | | | | | | | |
| Austria | | | | | | | | | | | | | | | | | | | | | | | |
| Belarus | | | | | | | | | | | | | | | | | | | | | | | |
| Belgium | | | | | | | | | | | | | | | | | | | | | | | |
| Bosnia and Herzegovina | | | | | | | | | | | | | | | | | | | | | | | |
| Bulgaria | | | | | | | | | | | | | | | | | | | | | | | |
| Croatia | | | | | | | | | | | | | | | | | | | | | | | |
| Czechia | | | | | | | | | | | | | | | | | | | | | | | |
| Denmark | | | | | | | | | | | | | | | | | | | | | | | |
| Estonia | | | | | | | | | | | | | | | | | | | | | | | |
| Finland | | | | | | | | | | | | | | | | | | | | | | | |
| France | | | | | | | | | | | | | | | | | | | | | | | |
| Germany | | | | | | | | | | | | | | | | | | | | | | | |
| Greece | | | | | | | | | | | | | | | | | | | | | | | |
| Hungary | | | | | | | | | | | | | | | | | | | | | | | |
| Iceland | | | | | | | | | | | | | | | | | | | | | | | |
| Ireland | | | | | | | | | | | | | | | | | | | | | | | |
| Italy | | | | | | | | | | | | | | | | | | | | | | | |
| Latvia | | | | | | | | | | | | | | | | | | | | | | |
| Liechtenstein | | | | | | | | | | | | | | | | | | | | | | | |
| Lithuania | | | | | | | | | | | | | | | | | | | | | | | |
| Luxembourg | | | | | | | | | | | | | | | | | | | | | | | |
| Malta | | | | | | | | | | | | | | | | | | | | | | | |
| Monaco | | | | | | | | | | | | | | | | | | | | | | | |
| Montenegro | | | | | | | | | | | | | | | | | | | | | | | |
| Netherlands | | | | | | | | | | | | | | | | | | | | | |
| North Macedonia | | | | | | | | | | | | | | | | | | | | | | | |
| Norway | | | | | | | | | | | | | | | | | | | | | | | |
| Poland | | | | | | | | | | | | | | | | | | | | | | | |
| Portugal | | | | | | | | | | | | | | | | | | | | | | | |
| Republic of Moldova | | | | | | | | | | | | | | | | | | | | | | | |
| Romania | | | | | | | | | | | | | | | | | | | | | | | |
| Russian Federation | | | | | | | | | | | | | | | | | | | | | | | |
| San Marino | | | | | | | | | | | | | | | | | | | | | | | |
| Serbia | | | | | | | | | | | | | | | | | | | | | | | |
| Slovakia | | | | | | | | | | | | | | | | | | | | | | | |
| Slovenia | | | | | | | | | | | | | | | | | | | | | | | |
| Spain | | | | | | | | | | | | | | | | | | | | | | | |
| Sweden | | | | | | | | | | | | | | | | | | | | | | | |
| Switzerland | | | | | | | | | | | | | | | | | | | | | | | |
| Ukraine | | | | | | | | | | | | | | | | | | | | | | | |
| United Kingdom of Great Britain and Northern Ireland | | | | | | | | | | | | | | | | | | | | | | | |