Figure 2
A line graph titled 'RAG-derived GRI-principle ratings for BVB sustainability reports' displays ratings across reporting periods from 2016/17 to 2023/24. The x-axis represents the reporting periods, while the y-axis represents the RAG-derived evidence score ranging from 1 to 5. The graph includes multiple lines, each representing a different GRI principle: Accuracy, Completeness, Balance, Sustainability context, Clarity, Timeliness, Comparability, and Verifiability. Each line shows the score for the respective principle over the reporting periods. The lines intersect and fluctuate, indicating varying levels of adherence to each principle over time. The principles of Accuracy, Balance, and Verifiability generally maintain higher scores, while Completeness and Timeliness show more variability. The graph suggests a complex pattern of sustainability reporting, with some principles receiving stable evidence across years and others remaining uneven. All values are approximated.RAG-derived GRI-principle ratings across reporting periods. Source: Edited by the authors based on RAG evaluation outputs