Terrestrial protected areas are those officially documented by national authorities.
| 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bulgaria | 45.2 | 40.6 | 40.6 | 34.7 | 34.7 | 34.7 | 40.6 | 41.0 | 41.0 | 41.0 | 41.0 | 44.3 |
| Slovenia | 54.9 | 53.6 | 53.6 | 53.6 | 53.6 | 53.6 | 53.6 | 40.4 | 40.4 | 40.4 | 40.4 | 40.5 |
| Poland | 35.4 | 30.0 | 30.0 | 39.6 | 39.7 | 39.7 | 39.7 | 39.5 | 39.5 | 39.6 | 39.6 | 39.6 |
| Germany | 37.9 | 37.4 | 37.4 | 37.8 | 37.8 | 37.8 | 37.4 | 37.8 | 37.5 | 37.6 | 37.6 | 39.3 |
| 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 |
| Croatia | 13.8 | 38.0 | 38.0 | 38.2 | 38.3 | 38.3 | 38.3 | 38.4 | 38.4 | 38.5 | 38.5 | 38.4 |
| Slovakia | 35.9 | 36.8 | 36.8 | 37.3 | 37.3 | 37.6 | 37.6 | 37.6 | 37.6 | 37.6 | 37.6 | 37.5 |
| Greece | 35.1 | 35.0 | 35.0 | 35.0 | 35.0 | 35.2 | 35.2 | 35.2 | 35.2 | 35.2 | 35.2 | 35.0 |
| France | 25.4 | 25.6 | 25.6 | 25.8 | 26.0 | 25.8 | 26.3 | 27.3 | 28.0 | 28.4 | 28.4 | 28.6 |
| United Kingdom | 28.0 | 28.8 | 28.7 | 28.2 | 28.7 | 28.7 | 28.7 | 28.7 | 27.8 | 27.8 | 27.8 | 28.4 |
| Spain | 29.8 | 27.9 | 28.0 | 28.0 | 28.0 | 28.1 | 28.1 | 28.1 | 28.1 | 28.1 | 28.1 | 28.1 |
| Romania | 19.4 | 24.2 | 24.4 | 24.3 | 24.5 | 24.5 | 24.5 | 24.5 | 24.5 | 24.5 | 24.5 | 24.6 |
| Albania | 10.1 | 2.1 | 2.6 | 17.2 | 17.7 | 17.7 | 18.6 | 18.6 | 18.6 | 18.6 | 18.6 | 23.6 |
| Netherlands | 17.6 | 11.4 | 11.3 | 11.3 | 11.2 | 11.2 | 22.5 | 22.5 | 22.5 | 22.5 | 22.5 | 22.9 |
| Portugal | 23.1 | 22.2 | 22.7 | 23.0 | 22.9 | 22.9 | 22.9 | 22.9 | 22.9 | 22.9 | 22.9 | 22.8 |
| 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 |
| Estonia | 20.1 | 20.1 | 20.1 | 20.2 | 20.2 | 20.2 | 20.6 | 21.2 | 21.3 | 21.4 | 21.4 | 22.0 |
| Czech Republic | 21.9 | 21.8 | 21.7 | 22.1 | 22.2 | 22.2 | 22.2 | 22.2 | 22.2 | 22.2 | 22.2 | 21.9 |
| Montenegro | 14.6 | 4.1 | 4.1 | 4.1 | 6.4 | 6.4 | 10.5 | 13.8 | 13.8 | 13.9 | 13.9 | 21.7 |
| Italy | 21.4 | 21.5 | 21.5 | 21.5 | 21.5 | 21.5 | 21.5 | 21.5 | 21.5 | 21.6 | 21.6 | 21.6 |
| Iceland | 20.2 | 16.7 | 16.7 | 17.4 | 18.2 | 18.2 | 19.5 | 19.9 | 20.3 | 20.8 | 20.8 | 20.9 |
| Latvia | 18.2 | 18.2 | 18.2 | 18.2 | 18.2 | 18.2 | 18.2 | 18.2 | 18.2 | 18.2 | 18.2 | 18.5 |
| Lithuania | 16.9 | 16.9 | 16.9 | 16.9 | 17.0 | 17.0 | 17.0 | 17.0 | 17.1 | 17.1 | 17.1 | 17.8 |
| Norway | 16.8 | 16.9 | 16.9 | 17.0 | 17.1 | 17.1 | 16.8 | 17.6 | 29.9 | 30.5 | 17.7 | 17.8 |
| Belgium | 22.9 | 22.8 | 22.8 | 23.3 | 23.3 | 23.3 | 24.9 | 15.4 | 15.5 | 15.6 | 15.6 | 16.3 |
| Denmark | 17.5 | 25.6 | 25.6 | 18.1 | 26.1 | 18.1 | 17.2 | 17.0 | 17.0 | 17.0 | 17.0 | 15.8 |
| Canada | 9.4 | 9.4 | 9.3 | 9.7 | 9.7 | 9.6 | 11.0 | 9.9 | 11.9 | 12.7 | 12.8 | 12.9 |
| United States of America | 13.6 | 13.1 | 13.1 | 13.0 | 13.5 | 13.0 | 13.0 | 11.8 | 13.0 | 13.0 | 12.9 | 12.9 |
| Turkey | 2.5 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 7.0 | 7.0 | 7.0 | 7.0 |