United Nations Environmental Program and the World Conservation Monitoring Centre, as compiled by the World Resources Institute, based on data from national authorities, national legislation and international agreements.
| 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Monaco | 0.3 | 0.3 | 0.3 | 99.7 | 99.4 | 99.5 | 99.4 | 99.4 | 99.2 | 99.2 | 99.2 | 99.5 |
| Liechtenstein | 42.2 | 42.2 | 42.2 | 42.5 | 11.9 | 11.9 | 42.2 | 42.6 | 42.6 | 42.6 | 42.6 | 44.8 |
| United Kingdom | 11.3 | 19.7 | 16.6 | 22.3 | 28.9 | 28.8 | 29.0 | 40.3 | 39.9 | 39.9 | 39.9 | 42.1 |
| Slovenia | 55.3 | 54.1 | 54.1 | 55.1 | 54.0 | 55.1 | 54.0 | 40.0 | 40.1 | 40.1 | 40.1 | 40.2 |
| Germany | 38.9 | 38.5 | 38.5 | 38.7 | 38.8 | 38.8 | 38.5 | 38.8 | 38.5 | 38.7 | 38.7 | 40.1 |
| Armenia | 23.3 | 23.1 | 23.1 | 23.1 | 23.1 | 23.1 | 24.3 | 24.3 | 24.3 | 24.7 | 24.7 | 38.9 |
| Luxembourg | 37.3 | 34.9 | 32.5 | 32.3 | 40.9 | 40.9 | 51.2 | 51.2 | 51.3 | 55.8 | 55.8 | 38.7 |
| Poland | 34.2 | 29.3 | 29.3 | 38.0 | 38.1 | 38.1 | 38.1 | 38.0 | 38.0 | 38.0 | 38.0 | 38.2 |
| Slovak Republic | 35.9 | 36.8 | 36.8 | 37.3 | 37.3 | 37.6 | 37.6 | 37.6 | 37.6 | 37.6 | 37.6 | 37.5 |
| France | 23.5 | 23.4 | 23.2 | 26.1 | 27.8 | 33.2 | 35.0 | 36.2 | 36.4 | 36.6 | 36.6 | 36.8 |
| Bulgaria | 35.0 | 31.5 | 32.8 | 28.3 | 28.3 | 28.3 | 32.8 | 33.1 | 33.1 | 33.1 | 33.1 | 35.6 |
| Netherlands | 20.2 | 18.0 | 17.9 | 17.9 | 21.2 | 21.2 | 25.3 | 25.3 | 25.3 | 25.3 | 25.3 | 29.8 |
| Austria | 24.0 | 28.3 | 28.4 | 28.4 | 28.4 | 28.4 | 28.4 | 29.1 | 29.3 | 29.5 | 29.5 | 29.6 |
| North Macedonia | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 10.6 | 9.0 | 12.5 | 15.4 | 15.4 | 28.2 |
| Andorra | 9.2 | 18.2 | 21.1 | 21.2 | 26.7 | 26.7 | 26.7 | 26.7 | 26.9 | 26.9 | 26.9 | 27.3 |
| Romania | 18.1 | 22.5 | 22.6 | 22.6 | 24.3 | 24.3 | 24.4 | 24.4 | 24.4 | 24.4 | 24.4 | 24.3 |
| Croatia | 8.0 | 23.7 | 23.7 | 23.5 | 23.6 | 23.6 | 23.6 | 23.9 | 23.9 | 23.9 | 23.9 | 24.1 |
| Hungary | 23.2 | 22.6 | 22.6 | 22.6 | 22.6 | 22.6 | 22.6 | 22.6 | 22.6 | 22.6 | 22.6 | 22.6 |
| Tajikistan | 19.7 | 22.3 | 22.3 | 22.3 | 22.3 | 22.3 | 22.3 | 22.3 | 22.3 | 22.3 | 22.3 | 22.6 |
| Czechia | 21.9 | 21.8 | 21.7 | 21.7 | 22.2 | 22.2 | 22.2 | 22.2 | 22.2 | 22.2 | 22.2 | 21.9 |
| Estonia | 19.4 | 19.4 | 19.4 | 19.5 | 19.5 | 19.5 | 19.7 | 20.1 | 20.2 | 20.2 | 20.2 | 20.8 |
| Mongolia | 13.8 | 17.4 | 17.4 | 17.4 | 17.7 | 17.7 | 17.7 | 19.8 | 19.8 | 19.8 | 19.8 | 19.8 |
| Belgium | 24.3 | 24.2 | 24.2 | 24.6 | 24.7 | 24.6 | 26.1 | 17.6 | 17.8 | 17.8 | 17.8 | 18.5 |
| Lithuania | 16.4 | 16.4 | 16.9 | 17.3 | 17.7 | 17.8 | 17.8 | 17.8 | 17.8 | 17.8 | 17.8 | 18.3 |
| Albania | 7.7 | 1.8 | 2.2 | 13.1 | 13.5 | 13.5 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 18.0 |
| Latvia | 17.8 | 17.8 | 17.8 | 17.5 | 17.5 | 17.5 | 17.5 | 17.5 | 17.5 | 17.5 | 17.5 | 17.9 |
| Spain | 11.1 | 10.1 | 14.1 | 15.2 | 14.9 | 15.0 | 17.9 | 17.9 | 17.9 | 17.9 | 17.9 | 17.9 |
| Denmark | 17.6 | 20.5 | 20.5 | 17.8 | 20.7 | 17.9 | 17.7 | 17.9 | 17.9 | 17.9 | 17.9 | 17.7 |
| Ukraine | 3.9 | 3.9 | 3.9 | 3.9 | 3.9 | 3.9 | 3.9 | 4.2 | 12.3 | 12.3 | 12.3 | 17.7 |
| Georgia | 6.1 | 6.4 | 6.4 | 6.4 | 6.4 | 6.4 | 7.2 | 7.2 | 7.2 | 8.5 | 8.5 | 17.4 |
| Portugal | 7.4 | 7.4 | 7.5 | 9.1 | 16.5 | 16.9 | 16.9 | 17.1 | 17.1 | 17.2 | 17.2 | 17.1 |
| Montenegro | 9.6 | 2.6 | 2.6 | 2.6 | 4.2 | 4.2 | 6.9 | 9.0 | 9.0 | 9.2 | 9.2 | 16.1 |
| United States | 13.5 | 12.0 | 20.1 | 26.3 | 26.6 | 26.3 | 26.3 | 23.9 | 15.9 | 15.9 | 15.9 | 15.8 |
| Sweden | 12.6 | 13.0 | 13.1 | 12.9 | 15.0 | 15.0 | 14.6 | 14.7 | 14.8 | 15.5 | 15.5 | 15.6 |
| Italy | 11.2 | 11.3 | 11.3 | 13.3 | 13.3 | 13.4 | 13.3 | 14.0 | 14.5 | 14.5 | 14.5 | 14.6 |
| Serbia | 7.4 | 6.7 | 6.7 | 6.1 | 6.6 | 6.6 | 7.6 | 7.6 | 7.6 | 8.1 | 8.1 | 13.4 |
| Finland | 13.9 | 14.2 | 14.2 | 14.2 | 14.1 | 14.2 | 13.1 | 13.0 | 13.1 | 13.1 | 13.1 | 13.3 |
| Switzerland | 24.8 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 10.0 | 12.0 | 12.1 | 12.1 | 12.1 | 12.5 |
| Azerbaijan | 6.4 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 12.0 |
| Kazakhstan | 3.2 | 3.2 | 3.2 | 3.2 | 3.2 | 3.2 | 3.2 | 11.7 | 11.7 | 11.7 | 11.7 | 11.9 |
| Canada | 6.3 | 6.3 | 6.2 | 6.5 | 6.5 | 6.5 | 8.1 | 9.5 | 10.8 | 11.4 | 11.5 | 11.6 |
| Moldova | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 11.4 | 11.4 | 11.4 | 11.5 |
| Greece | 8.6 | 8.6 | 8.6 | 8.6 | 8.6 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.2 |
| Cyprus | 1.9 | 1.7 | 1.7 | 1.7 | 1.7 | 1.7 | 3.4 | 11.2 | 11.2 | 11.2 | 11.2 | 11.1 |
| Bosnia and Herzegovina | 1.6 | 1.1 | 1.5 | 1.5 | 1.4 | 1.4 | 1.4 | 3.6 | 4.0 | 4.1 | 4.1 | 9.5 |
| Uzbekistan | 3.4 | 3.4 | 3.4 | 3.4 | 3.4 | 3.4 | 3.4 | 5.8 | 5.8 | 5.8 | 9.5 | 9.5 |
| Belarus | 8.3 | 8.6 | 8.8 | 9.5 | 9.4 | 9.4 | 9.4 | 9.4 | 13.8 | 13.8 | 13.8 | 9.4 |
| Russian Federation | 8.8 | 7.6 | 7.6 | 7.6 | 7.6 | 7.6 | 7.6 | 8.6 | 8.6 | 8.6 | 8.6 | 8.6 |
| Malta | 0.5 | 0.5 | 0.5 | 6.4 | 6.4 | 6.4 | 7.6 | 7.6 | 7.6 | 7.6 | 7.6 | 8.0 |
| Kyrgyz Republic | 6.5 | 6.5 | 6.5 | 6.5 | 6.7 | 6.7 | 6.7 | 6.7 | 6.7 | 6.7 | 6.7 | 6.8 |
| Turkiye | 2.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 5.7 | 5.7 | 5.7 | 5.7 |
| Norway | 4.7 | 4.8 | 4.8 | 5.0 | 5.1 | 5.1 | 5.0 | 5.7 | 15.1 | 15.2 | 5.6 | 5.4 |
| Turkmenistan | 3.2 | 3.2 | 3.2 | 3.2 | 3.2 | 3.2 | 3.2 | 3.2 | 3.2 | 3.2 | 3.2 | 4.3 |
| Ireland | 3.3 | 3.4 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.1 |
| Iceland | 2.7 | 2.3 | 2.3 | 2.4 | 2.5 | 2.5 | 2.7 | 2.8 | 2.8 | 2.9 | 2.9 | 2.9 |