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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Denmark | 17.6 | 20.5 | 20.5 | 17.9 | 20.7 | 17.9 | 17.7 | 17.9 | 17.9 | 17.9 | 17.9 | 17.7 |
| 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 |
| 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 |
| 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 |
| 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 |