Figure 7
The bar graph compares the number of articles published each year from 2006 to 2021. The x-axis represents the years, and the y-axis represents the number of articles. There are 12 vertical bars, each corresponding to a specific year. The bars show an increasing trend in the number of articles published over the years. The values for each year are as follows: 2006 with 1 article, 2014 with 2 articles, 2015 with 1 article, 2016 with 3 articles, 2017 with 13 articles, 2018 with 14 articles, 2019 with 16 articles, 2020 with 19 articles, and 2021 with 18 articles. The color scheme is a single brown color for all bars. All values are approximated.ST number of articles year-wise