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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Slovenia | 55.3 | 54.1 | 54.1 | 54.1 | 54.0 | 54.0 | 54.0 | 40.0 | 40.1 | 40.1 | 40.1 | 40.2 |
| Germany | 38.9 | 38.5 | 38.5 | 38.8 | 38.8 | 38.8 | 38.5 | 38.8 | 38.5 | 38.7 | 38.7 | 40.1 |
| Luxembourg | 37.3 | 34.9 | 32.5 | 42.0 | 40.9 | 40.9 | 51.2 | 51.2 | 51.3 | 55.8 | 55.8 | 38.7 |
| 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 | 25.9 | 27.8 | 33.2 | 35.0 | 36.2 | 36.4 | 36.6 | 36.6 | 36.8 |
| 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 | 27.6 | 28.4 | 28.4 | 28.4 | 29.1 | 29.3 | 29.5 | 29.5 | 29.6 |
| 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 |
| 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 |
| 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 | 15.0 | 14.9 | 15.0 | 17.9 | 17.9 | 17.9 | 17.9 | 17.9 | 17.9 |
| 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 |
| 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 |
| Finland | 13.9 | 14.2 | 14.2 | 14.3 | 14.1 | 14.2 | 13.1 | 13.0 | 13.1 | 13.1 | 13.1 | 13.3 |
| 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 | 3.3 | 3.4 | 11.2 | 11.2 | 11.2 | 11.2 | 11.1 |
| 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 |
| 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 |