Figure 2.
The image is a line graph representing data spanning from the year 2001 to 2023. The horizontal axis indicates the years, while the vertical axis denotes numerical values, ranging from 0 to 16, with increments of 2. The line shows a series of fluctuating points, reflecting variations in the data across the years, with notable peaks and troughs at different intervals, notably in 2006 and 2015. The overall trend illustrates the rise and fall of values, culminating in a recent stabilisation in the years 2022 and 2023.The reviewed items’ distribution per publication year
Source: Author’s own work