Figure 2
The horizontal axis is labeled “Year,” ranging from 1990 to 2030 in increments of 5 years. The vertical axis is labeled “Number of publications,” ranging from 0 to 16 in increments of 2 units. The graph displays 16 data points connected by a smooth curve, with the data points shown as dots. The curve appears to follow an upward trend, starting slowly and gradually rising before fluctuating with periodic peaks. The curve shows a general increasing trend, especially after the year 2005, with occasional dips and spikes. A curve representing a trendline is also shown, indicating a smooth approximation of the data points. The points are as follows: “1990: 0 publication (Approximate point near the bottom of the graph) 1995: 2 publications 2000: 2 publications 2005: 3 publications 2010: 4 publications 2015: 5 publications 2020: 12 publications 2025: 16 publications (Peak) 2030: 0 publications”Growth in sustainability measurement articles. Source: Authors