Terrestrial protected areas are those officially documented by national authorities.
| 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Benin | 29.6 | 29.6 | 28.9 | 29.6 | 29.6 | 29.6 | 29.6 | 29.6 | 29.6 | 29.6 | 29.6 | 29.7 |
| Togo | 27.8 | 27.6 | 27.6 | 27.6 | 27.6 | 27.6 | 27.6 | 28.0 | 28.0 | 28.0 | 28.0 | 28.1 |
| Senegal | 25.2 | 25.2 | 25.2 | 25.2 | 25.2 | 25.4 | 25.4 | 25.4 | 26.4 | 26.4 | 26.4 | 26.3 |
| Guinea-Bissau | 16.2 | 16.2 | 16.2 | 16.7 | 16.7 | 16.7 | 16.7 | 26.3 | 26.3 | 27.1 | 27.1 | 26.2 |
| Cote d'Ivoire | 22.9 | 22.9 | 22.9 | 22.9 | 22.9 | 22.9 | 23.0 | 23.0 | 23.0 | 23.0 | 23.0 | 22.8 |
| Niger | 16.7 | 17.3 | 17.3 | 17.3 | 17.3 | 17.3 | 17.3 | 18.2 | 18.2 | 18.2 | 18.2 | 18.2 |
| Cabo Verde | 2.5 | 2.6 | 2.6 | 2.6 | 2.9 | 2.9 | 2.9 | 2.9 | 2.9 | 2.9 | 2.9 | 17.6 |
| Burkina Faso | 15.8 | 15.8 | 15.8 | 15.1 | 14.9 | 14.9 | 14.9 | 16.4 | 16.4 | 16.4 | 16.4 | 16.5 |
| Ghana | 15.1 | 15.1 | 15.1 | 15.1 | 15.1 | 15.0 | 15.0 | 14.8 | 14.8 | 14.8 | 14.8 | 14.8 |
| Nigeria | 13.9 | 13.9 | 13.9 | 13.9 | 13.9 | 13.9 | 13.9 | 13.9 | 13.9 | 13.9 | 13.9 | 13.9 |
| Sierra Leone | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 12.7 | 12.7 | 12.7 | 12.6 |
| Gambia, The | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 7.7 | 7.7 | 7.7 | 7.7 | 7.6 |
| Mali | 9.1 | 8.3 | 8.3 | 8.2 | 8.2 | 8.2 | 8.2 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 |
| Liberia | 2.5 | 2.5 | 2.5 | 2.5 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.0 |