- Data collected from OECDstat 2021-09-02: https://stats.oecd.org/
- Country groups from FAOSTAT
- OECD countries as well as a number of non-OECD countries are included
- The lines show unweighted group means of N balance per hectare.
- Copyright 2023 Rasmus Einarsson
- Source code: see LICENSE file
- Figures: Open access licensed under Creative Commons Attribution ShareAlike 4.0 license. See https://creativecommons.org/licenses/by-sa/4.0/